PTB-3 incompatible with Thinkpad T60p?

1
Hi All,

I am trying to run PTB-3 on a Lenovo Thinkpad T60p. It has a ATI
Mobility FireGL V5200 graphic chip, with 512MB video memory. However,
after opening a screen, the attached error messages appear. I
downloaded the latest driver from Lenovo but the problem persists. Has
anyone ever come across the same problem?

Erik



PTB-WARNING: Could not bind wglChoosePixelFormat - Extension. Some
features will be unavailable, e.g., Anti-Aliasing and high precision
framebuffers.
PTB-WARNING: Your graphics driver doesn't allow me to control syncing
wrt. vertical retrace!
PTB-WARNING: Please update your display graphics driver as soon as
possible to fix this.
PTB-WARNING: Until then, you can manually enable syncing to VBL
somewhere in the display settings
PTB-WARNING: tab of your machine.


PTB-INFO: This is the OpenGL-Psychtoolbox version 3.0.8. Type
'PsychtoolboxVersion' for more detailed version information.
PTB-INFO: Psychtoolbox is licensed to you under terms of the GNU
General Public License (GPL). See file 'License.txt' in the
PTB-INFO: Psychtoolbox root folder for a copy of the GPL license.



OpenGL-Extensions are: GL_WIN_swap_hint GL_EXT_bgra
GL_EXT_paletted_texture

PTB-WARNING: Couldn't even collect one single valid flip interval
sample! Sanity range checks failed!
PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
sync failure!
PTB-WARNING: Couldn't even collect one single valid flip interval
sample! Sanity range checks failed!
PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
sync failure!
PTB-WARNING: Couldn't even collect one single valid flip interval
sample! Sanity range checks failed!
PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
sync failure!


PTB-INFO: OpenGL-Renderer is Microsoft Corporation :: GDI Generic :: 1.1.0
PTB-WARNING: Seems that Microsofts OpenGL software renderer is active!
This will likely cause miserable
PTB-WARNING: performance and severe timing and synchronization
problems. A reason could be that you run at
PTB-WARNING: a too high display resolution, or the system is running
out of ressources for some other reason.
PTB-WARNING: Another reason could be that you disabled hardware
acceleration in the display settings panel: Make sure that
PTB-WARNING: in Display settings panel -> Settings -> Advanced ->
Troubleshoot -> The hardware acceleration slider is
PTB-WARNING: set to 'Full' (rightmost position).
PTB-Info: VBL startline = 1200 , VBL Endline = 1201
PTB-Info: Measured monitor refresh interval from beamposition =
16.666843 ms [59.999365 Hz].
PTB-Info: Will use beamposition query for accurate Flip time stamping.
PTB-Info: Measured monitor refresh interval from VBLsync = 0.000000 ms
[1.#INF00 Hz]. (0 valid samples taken, stddev=1000000000.000000 ms.)
PTB-Info: Reported monitor refresh interval from operating system =
16.666667 ms [60.000000 Hz].
PTB-Info: Small deviations between reported values are normal and no
reason to worry.

PTB-WARNING: Your graphics hardware & driver doesn't support OpenGL
rectangle textures.
PTB-WARNING: This won't affect the correctness or visual accuracy of
image drawing, but it can significantly
PTB-WARNING: degrade performance/speed and increase memory consumption
of images by up to a factor of 4!
PTB-WARNING: If you use a lot of image stimuli (DrawTexture, Offscreen
windows, Stereo display, Quicktime movies)
PTB-WARNING: and you are unhappy with the performance, then please
upgrade your graphics driver and possibly
PTB-WARNING: your gfx hardware if you need higher performance...

WARNING: Couldn't compute a reliable estimate of monitor refresh
interval! Trouble with VBL syncing?!?

WARNING: Mismatch between measured monitor refresh interval and
interval reported by operating system.
This indicates massive problems with VBL sync.

WARNING: Measured monitor refresh interval indicates a display refresh
of less than 25 Hz or more than 250 Hz?!?
This indicates massive problems with VBL sync.


----- ! PTB - ERROR: SYNCHRONIZATION FAILURE ! ----

One or more internal checks (see Warnings above) indicate that
synchronization
of Psychtoolbox to the vertical retrace (VBL) is not working on your
setup.

This will seriously impair proper stimulus presentation and stimulus
presentation timing!
Please read 'help SyncTrouble' for information about how to solve or
work-around the problem.
You can force Psychtoolbox to continue, despite the severe problems,
by adding the command
Screen('Preference', 'SkipSyncTests',1); at the top of your script, if
you really know what you are doing.


???

Error in ==> test at 15
[window mainrect]=Screen('OpenWindow', whichScreen, [0 0 0], [0 0
100 100]);
2
Hi All,

I am trying to run PTB-3 on a Lenovo Thinkpad T60p. It has a ATI
Mobility FireGL V5200 graphic chip, with 512MB video memory. However,
after opening a screen, the attached error messages appear. I
downloaded the latest driver from Lenovo but the problem persists. Has
anyone ever come across the same problem?

Erik



PTB-WARNING: Could not bind wglChoosePixelFormat - Extension. Some
features will be unavailable, e.g., Anti-Aliasing and high precision
framebuffers.
PTB-WARNING: Your graphics driver doesn't allow me to control syncing
wrt. vertical retrace!
PTB-WARNING: Please update your display graphics driver as soon as
possible to fix this.
PTB-WARNING: Until then, you can manually enable syncing to VBL
somewhere in the display settings
PTB-WARNING: tab of your machine.


PTB-INFO: This is the OpenGL-Psychtoolbox version 3.0.8. Type
'PsychtoolboxVersion' for more detailed version information.
PTB-INFO: Psychtoolbox is licensed to you under terms of the GNU
General Public License (GPL). See file 'License.txt' in the
PTB-INFO: Psychtoolbox root folder for a copy of the GPL license.



OpenGL-Extensions are: GL_WIN_swap_hint GL_EXT_bgra
GL_EXT_paletted_texture

PTB-WARNING: Couldn't even collect one single valid flip interval
sample! Sanity range checks failed!
PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
sync failure!
PTB-WARNING: Couldn't even collect one single valid flip interval
sample! Sanity range checks failed!
PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
sync failure!
PTB-WARNING: Couldn't even collect one single valid flip interval
sample! Sanity range checks failed!
PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
sync failure!


PTB-INFO: OpenGL-Renderer is Microsoft Corporation :: GDI Generic :: 1.1.0
PTB-WARNING: Seems that Microsofts OpenGL software renderer is active!
This will likely cause miserable
PTB-WARNING: performance and severe timing and synchronization
problems. A reason could be that you run at
PTB-WARNING: a too high display resolution, or the system is running
out of ressources for some other reason.
PTB-WARNING: Another reason could be that you disabled hardware
acceleration in the display settings panel: Make sure that
PTB-WARNING: in Display settings panel -> Settings -> Advanced ->
Troubleshoot -> The hardware acceleration slider is
PTB-WARNING: set to 'Full' (rightmost position).
PTB-Info: VBL startline = 1200 , VBL Endline = 1201
PTB-Info: Measured monitor refresh interval from beamposition =
16.666843 ms [59.999365 Hz].
PTB-Info: Will use beamposition query for accurate Flip time stamping.
PTB-Info: Measured monitor refresh interval from VBLsync = 0.000000 ms
[1.#INF00 Hz]. (0 valid samples taken, stddev=1000000000.000000 ms.)
PTB-Info: Reported monitor refresh interval from operating system =
16.666667 ms [60.000000 Hz].
PTB-Info: Small deviations between reported values are normal and no
reason to worry.

PTB-WARNING: Your graphics hardware & driver doesn't support OpenGL
rectangle textures.
PTB-WARNING: This won't affect the correctness or visual accuracy of
image drawing, but it can significantly
PTB-WARNING: degrade performance/speed and increase memory consumption
of images by up to a factor of 4!
PTB-WARNING: If you use a lot of image stimuli (DrawTexture, Offscreen
windows, Stereo display, Quicktime movies)
PTB-WARNING: and you are unhappy with the performance, then please
upgrade your graphics driver and possibly
PTB-WARNING: your gfx hardware if you need higher performance...

WARNING: Couldn't compute a reliable estimate of monitor refresh
interval! Trouble with VBL syncing?!?

WARNING: Mismatch between measured monitor refresh interval and
interval reported by operating system.
This indicates massive problems with VBL sync.

WARNING: Measured monitor refresh interval indicates a display refresh
of less than 25 Hz or more than 250 Hz?!?
This indicates massive problems with VBL sync.


----- ! PTB - ERROR: SYNCHRONIZATION FAILURE ! ----

One or more internal checks (see Warnings above) indicate that
synchronization
of Psychtoolbox to the vertical retrace (VBL) is not working on your
setup.

This will seriously impair proper stimulus presentation and stimulus
presentation timing!
Please read 'help SyncTrouble' for information about how to solve or
work-around the problem.
You can force Psychtoolbox to continue, despite the severe problems,
by adding the command
Screen('Preference', 'SkipSyncTests',1); at the top of your script, if
you really know what you are doing.


???

Error in ==> test at 15
[window mainrect]=Screen('OpenWindow', whichScreen, [0 0 0], [0 0
100 100]);
3
Did you follow the instructions to check the hardware acceleration settings, as suggested
in the output of PTB?

The software renderer is active - for some reason the hardware renderer is inactive. Check
the slider if it is on 'full' position.

How old are the latest drivers from Lenovo?

-mario

--- In psychtoolbox@yahoogroups.com, "auda.tw" <audachang@...> wrote:
>
> Hi All,
>
> I am trying to run PTB-3 on a Lenovo Thinkpad T60p. It has a ATI
> Mobility FireGL V5200 graphic chip, with 512MB video memory. However,
> after opening a screen, the attached error messages appear. I
> downloaded the latest driver from Lenovo but the problem persists. Has
> anyone ever come across the same problem?
>
> Erik
>
>
>
> PTB-WARNING: Could not bind wglChoosePixelFormat - Extension. Some
> features will be unavailable, e.g., Anti-Aliasing and high precision
> framebuffers.
> PTB-WARNING: Your graphics driver doesn't allow me to control syncing
> wrt. vertical retrace!
> PTB-WARNING: Please update your display graphics driver as soon as
> possible to fix this.
> PTB-WARNING: Until then, you can manually enable syncing to VBL
> somewhere in the display settings
> PTB-WARNING: tab of your machine.
>
>
> PTB-INFO: This is the OpenGL-Psychtoolbox version 3.0.8. Type
> 'PsychtoolboxVersion' for more detailed version information.
> PTB-INFO: Psychtoolbox is licensed to you under terms of the GNU
> General Public License (GPL). See file 'License.txt' in the
> PTB-INFO: Psychtoolbox root folder for a copy of the GPL license.
>
>
>
> OpenGL-Extensions are: GL_WIN_swap_hint GL_EXT_bgra
> GL_EXT_paletted_texture
>
> PTB-WARNING: Couldn't even collect one single valid flip interval
> sample! Sanity range checks failed!
> PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
> sync failure!
> PTB-WARNING: Couldn't even collect one single valid flip interval
> sample! Sanity range checks failed!
> PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
> sync failure!
> PTB-WARNING: Couldn't even collect one single valid flip interval
> sample! Sanity range checks failed!
> PTB-WARNING: Couldn't collect valid flip interval samples! Fatal VBL
> sync failure!
>
>
> PTB-INFO: OpenGL-Renderer is Microsoft Corporation :: GDI Generic :: 1.1.0
> PTB-WARNING: Seems that Microsofts OpenGL software renderer is active!
> This will likely cause miserable
> PTB-WARNING: performance and severe timing and synchronization
> problems. A reason could be that you run at
> PTB-WARNING: a too high display resolution, or the system is running
> out of ressources for some other reason.
> PTB-WARNING: Another reason could be that you disabled hardware
> acceleration in the display settings panel: Make sure that
> PTB-WARNING: in Display settings panel -> Settings -> Advanced ->
> Troubleshoot -> The hardware acceleration slider is
> PTB-WARNING: set to 'Full' (rightmost position).
> PTB-Info: VBL startline = 1200 , VBL Endline = 1201
> PTB-Info: Measured monitor refresh interval from beamposition =
> 16.666843 ms [59.999365 Hz].
> PTB-Info: Will use beamposition query for accurate Flip time stamping.
> PTB-Info: Measured monitor refresh interval from VBLsync = 0.000000 ms
> [1.#INF00 Hz]. (0 valid samples taken, stddev=1000000000.000000 ms.)
> PTB-Info: Reported monitor refresh interval from operating system =
> 16.666667 ms [60.000000 Hz].
> PTB-Info: Small deviations between reported values are normal and no
> reason to worry.
>
> PTB-WARNING: Your graphics hardware & driver doesn't support OpenGL
> rectangle textures.
> PTB-WARNING: This won't affect the correctness or visual accuracy of
> image drawing, but it can significantly
> PTB-WARNING: degrade performance/speed and increase memory consumption
> of images by up to a factor of 4!
> PTB-WARNING: If you use a lot of image stimuli (DrawTexture, Offscreen
> windows, Stereo display, Quicktime movies)
> PTB-WARNING: and you are unhappy with the performance, then please
> upgrade your graphics driver and possibly
> PTB-WARNING: your gfx hardware if you need higher performance...
>
> WARNING: Couldn't compute a reliable estimate of monitor refresh
> interval! Trouble with VBL syncing?!?
>
> WARNING: Mismatch between measured monitor refresh interval and
> interval reported by operating system.
> This indicates massive problems with VBL sync.
>
> WARNING: Measured monitor refresh interval indicates a display refresh
> of less than 25 Hz or more than 250 Hz?!?
> This indicates massive problems with VBL sync.
>
>
> ----- ! PTB - ERROR: SYNCHRONIZATION FAILURE ! ----
>
> One or more internal checks (see Warnings above) indicate that
> synchronization
> of Psychtoolbox to the vertical retrace (VBL) is not working on your
> setup.
>
> This will seriously impair proper stimulus presentation and stimulus
> presentation timing!
> Please read 'help SyncTrouble' for information about how to solve or
> work-around the problem.
> You can force Psychtoolbox to continue, despite the severe problems,
> by adding the command
> Screen('Preference', 'SkipSyncTests',1); at the top of your script, if
> you really know what you are doing.
>
>
> ???
>
> Error in ==> test at 15
> [window mainrect]=Screen('OpenWindow', whichScreen, [0 0 0], [0 0
> 100 100]);
>
4
Hi mario,

Thanks for your detailed explanations.

Tutorial 24 does not work at all. There is an error message
"Initialization failed." 41 doesn't work either. Nothing shows up.
Tutorial 44 shows a spinning tube, but the expected "flare" effect is
replaced by a white square. My luck with those working OpenGL
applications probably just uses very simple 3D functions.

So my problem is not one specific to PTB, but more likely a general
failure in loading the correct OpenGL driver.

ATI does not directly provide Mobility FireGL drivers, instead they
let the laptop vendors take care of this. The latest Lenovo driver
update I can find on the Lenovo website was released on March 2nd
(version 8.350.0.0). I'll keep looking for appropriate driver, or seek
help from local expert on how to get the correct driver id and patch
the registry.

Best,

Erik




--- In psychtoolbox@yahoogroups.com, "Mario Kleiner"
<mario.kleiner@...> wrote:
>
> Try Nehe tutorial 24 and tell me what text it prints onto the
screen. Check if the high-
> numbered tutorials e.g, 41 work. I'd be surprised if it would show
something else than the
> Microsoft generic GDI renderer being active.
>
> Your card should use the hardware-accelerated OpenGL drivers from
ATI, which is expose
> a lot of extra functionality which is needed by PTB for timing,
anti-aliasing, fast texture
> mapping and the image processing pipeline.
>
> If the ATI driver fails to start for some reason, Windows will fall
back to Microsofts built-in
> pure software GDI renderer, which provides very basic 3D
functionality, but at a low
> performance, with unreliable timing and all those useful extensions
unsupported. That's
> what happens with PTB - that's why it starts up but fails the timing
tests, the timing is just
> too miserable without that extensions and hardware acceleration.
>
> Tutorial 24 and e.g, 41 make use of extensions, so they should show
something. If they
> should use the hardware renderer that would be a hint to the problem.
>
> One possible reason for the ATI driver not loading is described in
the forum wegpage i
> sent you: ATI ships two drivers, one for ATI Radeons, the other for
the professional ATI
> FireGL series. The model of your gfx-card is detected by its PCI-Id,
theoretically a unique
> number for each vendor, product and model of a piece of hardware.
The OS checks that Id
> at startup, looks it up in the registry to find the matching driver
file and loads it. Some
> FireGL's especially in Laptops seem to have the same PCI Id's as
some Radeons, so the
> wrong driver is loaded, fails to initialize and software-fallback is
triggered. That's why
> patching the registry to associate the FireGL's device id to the
firegl driver may help if
> done right.
>
> There are other reaons for software-fallback, e.g, out of ressouce
conditions: Too high
> resolution, too many displays, too many parallel graphics
applications, or some
> unsupported display configurations, e.g., low-color modes, or driver
bugs, or operating
> system bugs. Windows is known to have a fragile ressource management
when it comes to
> graphics (well not only graphics), something that is supposed to be
greatly improved in
> Vista, once it reaches some level of maturity.
>
> If you can find out if the proper device ids are associated with the
proper drivers that
> would be a step forward. If you find that all other OpenGL
applications work full blast
> except PTB that would be also a step forward, although i doubt it,
we don't do such extra
> ordinary things compared to other apps.
>
> What to report to your vendor i don't know. Maybe that hardware
accelerated OpenGL
> doesn't work, but only software rendering? If that is the case for
other apps than PTB. Most
> Laptop vendors are pretty bad when it comes to driver service, they
only provide very
> infrequent driver updates, so Laptop users are always suffering more
than desktop users
> which can just upgrade directly from the webpages of ATI or NVidia.
Did you check ATI's
> webpage and the webpage of IBM for driver updates?
>
> -mario
>
> --- In psychtoolbox@yahoogroups.com, "auda.tw" <audachang@> wrote:
> >
> > No it doesn't work in full screen for PTB either. Actually after PTB
> > initializes, the PTB screen remains there and wouldn't disappear, even
> > if I key in Screen("CloseAll"). I have to type exit to quit Matlab so
> > that I can return to the winxp desktop. That's why I use a smaller
> > screen to keep an eye on what error messages are there in the Matlab
> > command window.
> >
> > Yes, the color depth is set at 32 bit.
> >
> > A preliminary attempt to modify the registry seems to do nothing on
> > the situation (but it didn't make my laptop unbootable either). I
> > guess I'll just have to consult local windows expert to implement this
> > "surgery" on registry for me.
> >
> > I downloaded a few executables from nehe and they work just fine. I
> > wonder how should I report this peculiar problem to
> > lenovo/ati/microsoft tech support?
> >
> >
> > Thanks,
> >
> > Erik
> >
> >
> > --- In psychtoolbox@yahoogroups.com, "Mario Kleiner"
> > <mario.kleiner@> wrote:
> > >
> > > Hmm. Strange. We had similar problems on another Laptop from Dell
> > with a Mobility
> > > FireGL from Dell. A driver update killed OpenGL although the control
> > panels all reported
> > > normal operation. And even the old driver sometimes randomly shuts
> > down hardware
> > > acceleration.
> > >
> > > Could try the following:
> > >
> > > 1. Does it work in fullscreen mode in PTB?
> > > 2. Is the color depths the highest (millions of colors, or whatever
> > that's called on win).
> > >
> > > PTB in large parts behaves like any other OpenGL application. Do
> > other OpenGL
> > > applications work?
> > >
> > > <http://nehe.gamedev.net> has many demos and tutorials, windows
> > executables
> > > included. Most of these should run fluently and nice, given your
> > pretty high-end gfx card.
> > >
> > > I'd suspect a general ATI-OpenGL problem on your system, but that
> > would be a case for
> > > ATI/AMD/IBM customer support.
> > >
> > > This thread:
> > >
> >
<http://www.driverheaven.net/mobility-radeon-drivers-support/76736-ati-mobility-
> > > firegl-t2-hp-nw8000.html>
> > >
> > > Seems to describe similar problems with mobility FireGL's, not
> > exactly your Laptop, but the
> > > same pattern. You could try that if you are prepared for a bit of
> > surgery -- and a moderate
> > > risk of making your system unbootable if something goes wrong.
> > >
> > > The stuff about changing registry keys sounds promising to me, but
> > you need to know
> > > how to do that, using the window registry editor regedit.exe, or at
> > least somebody around
> > > who knows and who knows how to do troubleshooting if the system
breaks.
> > >
> > > My personal experience (n=8) with gfx-hardware on Laptops under
> > Windows: NVidia
> > > works most of the time, ATI breaks often. And there is the hardware
> > from Apple, which
> > > usually simply works. And there's Linux for PC users, the proof that
> > software product price
> > > is often anti-correlated to quality and performance, although i
> > wouldn't recommend PTB
> > > on Linux for average users at the moment, only for the tech savy
> > with special needs for
> > > performance and flexibility - not a shortcoming of Linux, just the
> > current state of PTB for
> > > Linux.
> > >
> > > Something related for your entertainment:
> > > <http://www.apple.com/getamac/ads/>
> > >
> > > good luck,
> > > -mario
> > >
> > >
> > > --- In psychtoolbox@yahoogroups.com, "auda.tw" <audachang@> wrote:
> > > >
> > > > Hi mario,
> > > >
> > > > yes i did make sure that hardware acceleration is full. the
drivers i
> > > > installed was released on Dec 06, 2006 (v8.323.000).
> > > >
> > > > In the error message, there is also some complaints about
running at
> > > > too high a screen resolution. Reducing the resolution to 800 X
600,
> > > > however, does not help.
> > > >
> > > > Erik
> > > > --- In psychtoolbox@yahoogroups.com, "Mario Kleiner"
> > > > <mario.kleiner@> wrote:
> > > > >
> > > > > Did you follow the instructions to check the hardware
acceleration
> > > > settings, as suggested
> > > > > in the output of PTB?
> > > > >
> > > > > The software renderer is active - for some reason the hardware
> > > > renderer is inactive. Check
> > > > > the slider if it is on 'full' position.
> > > > >
> > > > > How old are the latest drivers from Lenovo?
> > > > >
> > > > > -mario
> > > > >
> > > > > --- In psychtoolbox@yahoogroups.com, "auda.tw" <audachang@>
wrote:
> > > > > >
> > > > > > Hi All,
> > > > > >
> > > > > > I am trying to run PTB-3 on a Lenovo Thinkpad T60p. It has
a ATI
> > > > > > Mobility FireGL V5200 graphic chip, with 512MB video memory.
> > However,
> > > > > > after opening a screen, the attached error messages appear. I
> > > > > > downloaded the latest driver from Lenovo but the problem
> > persists. Has
> > > > > > anyone ever come across the same problem?
> > > > > >
> > > > > > Erik
> > > > > >
> > > > > >
> > > > > >
> > > > > > PTB-WARNING: Could not bind wglChoosePixelFormat -
Extension. Some
> > > > > > features will be unavailable, e.g., Anti-Aliasing and high
> > precision
> > > > > > framebuffers.
> > > > > > PTB-WARNING: Your graphics driver doesn't allow me to control
> > syncing
> > > > > > wrt. vertical retrace!
> > > > > > PTB-WARNING: Please update your display graphics driver as
soon as
> > > > > > possible to fix this.
> > > > > > PTB-WARNING: Until then, you can manually enable syncing
to VBL
> > > > > > somewhere in the display settings
> > > > > > PTB-WARNING: tab of your machine.
> > > > > >
> > > > > >
> > > > > > PTB-INFO: This is the OpenGL-Psychtoolbox version 3.0.8. Type
> > > > > > 'PsychtoolboxVersion' for more detailed version information.
> > > > > > PTB-INFO: Psychtoolbox is licensed to you under terms of
the GNU
> > > > > > General Public License (GPL). See file 'License.txt' in the
> > > > > > PTB-INFO: Psychtoolbox root folder for a copy of the GPL
license.
> > > > > >
> > > > > >
> > > > > >
> > > > > > OpenGL-Extensions are: GL_WIN_swap_hint GL_EXT_bgra
> > > > > > GL_EXT_paletted_texture
> > > > > >
> > > > > > PTB-WARNING: Couldn't even collect one single valid flip
interval
> > > > > > sample! Sanity range checks failed!
> > > > > > PTB-WARNING: Couldn't collect valid flip interval samples!
> > Fatal VBL
> > > > > > sync failure!
> > > > > > PTB-WARNING: Couldn't even collect one single valid flip
interval
> > > > > > sample! Sanity range checks failed!
> > > > > > PTB-WARNING: Couldn't collect valid flip interval samples!
> > Fatal VBL
> > > > > > sync failure!
> > > > > > PTB-WARNING: Couldn't even collect one single valid flip
interval
> > > > > > sample! Sanity range checks failed!
> > > > > > PTB-WARNING: Couldn't collect valid flip interval samples!
> > Fatal VBL
> > > > > > sync failure!
> > > > > >
> > > > > >
> > > > > > PTB-INFO: OpenGL-Renderer is Microsoft Corporation :: GDI
Generic
> > > > :: 1.1.0
> > > > > > PTB-WARNING: Seems that Microsofts OpenGL software renderer is
> > active!
> > > > > > This will likely cause miserable
> > > > > > PTB-WARNING: performance and severe timing and synchronization
> > > > > > problems. A reason could be that you run at
> > > > > > PTB-WARNING: a too high display resolution, or the system is
> > running
> > > > > > out of ressources for some other reason.
> > > > > > PTB-WARNING: Another reason could be that you disabled
hardware
> > > > > > acceleration in the display settings panel: Make sure that
> > > > > > PTB-WARNING: in Display settings panel -> Settings ->
Advanced ->
> > > > > > Troubleshoot -> The hardware acceleration slider is
> > > > > > PTB-WARNING: set to 'Full' (rightmost position).
> > > > > > PTB-Info: VBL startline = 1200 , VBL Endline = 1201
> > > > > > PTB-Info: Measured monitor refresh interval from
beamposition =
> > > > > > 16.666843 ms [59.999365 Hz].
> > > > > > PTB-Info: Will use beamposition query for accurate Flip time
> > stamping.
> > > > > > PTB-Info: Measured monitor refresh interval from VBLsync =
> > 0.000000 ms
> > > > > > [1.#INF00 Hz]. (0 valid samples taken,
> > stddev=1000000000.000000 ms.)
> > > > > > PTB-Info: Reported monitor refresh interval from operating
> > system =
> > > > > > 16.666667 ms [60.000000 Hz].
> > > > > > PTB-Info: Small deviations between reported values are normal
> > and no
> > > > > > reason to worry.
> > > > > >
> > > > > > PTB-WARNING: Your graphics hardware & driver doesn't support
> > OpenGL
> > > > > > rectangle textures.
> > > > > > PTB-WARNING: This won't affect the correctness or visual
> > accuracy of
> > > > > > image drawing, but it can significantly
> > > > > > PTB-WARNING: degrade performance/speed and increase memory
> > consumption
> > > > > > of images by up to a factor of 4!
> > > > > > PTB-WARNING: If you use a lot of image stimuli (DrawTexture,
> > Offscreen
> > > > > > windows, Stereo display, Quicktime movies)
> > > > > > PTB-WARNING: and you are unhappy with the performance,
then please
> > > > > > upgrade your graphics driver and possibly
> > > > > > PTB-WARNING: your gfx hardware if you need higher
performance...
> > > > > >
> > > > > > WARNING: Couldn't compute a reliable estimate of monitor
refresh
> > > > > > interval! Trouble with VBL syncing?!?
> > > > > >
> > > > > > WARNING: Mismatch between measured monitor refresh
interval and
> > > > > > interval reported by operating system.
> > > > > > This indicates massive problems with VBL sync.
> > > > > >
> > > > > > WARNING: Measured monitor refresh interval indicates a display
> > refresh
> > > > > > of less than 25 Hz or more than 250 Hz?!?
> > > > > > This indicates massive problems with VBL sync.
> > > > > >
> > > > > >
> > > > > > ----- ! PTB - ERROR: SYNCHRONIZATION FAILURE ! ----
> > > > > >
> > > > > > One or more internal checks (see Warnings above) indicate that
> > > > > > synchronization
> > > > > > of Psychtoolbox to the vertical retrace (VBL) is not working
> > on your
> > > > > > setup.
> > > > > >
> > > > > > This will seriously impair proper stimulus presentation and
> > stimulus
> > > > > > presentation timing!
> > > > > > Please read 'help SyncTrouble' for information about how to
> > solve or
> > > > > > work-around the problem.
> > > > > > You can force Psychtoolbox to continue, despite the severe
> > problems,
> > > > > > by adding the command
> > > > > > Screen('Preference', 'SkipSyncTests',1); at the top of your
> > script, if
> > > > > > you really know what you are doing.
> > > > > >
> > > > > >
> > > > > > ???
> > > > > >
> > > > > > Error in ==> test at 15
> > > > > > [window mainrect]=Screen('OpenWindow', whichScreen, [0 0
> > 0], [0 0
> > > > > > 100 100]);
> > > > > >
> > > > >
> > > >
> > >
> >
>