[UNSOLVED] Graphics Card Issues with Intel 945GSE

gunjah292 · 2011-12-14 02:40:54

I have several issues and im not sure if they are related to the same reason. But I think it all has to do with my graphics card not being detected right.
I have a Samsung N310 with 1,6 Ghz and 2Gb RAM and am using Gnome. If i go to "System settings --> System information" it shows me "Graphics: unknown".
Since my new installation i dont have an xorg.conf anymore, and i did not experience any disadvantages yet, but before my graphics card was detected as following in the xorg.conf:

"Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)"

In the Gnome System information it was not listed though, like now.

This is not really a problem, but it made me think that my other issues could be related to the card being not detected right.

Here are my real problems:

When i am watching a video on my external monitor i have slight lags, which are really annoying to me,
because im a big fan of a good picture!
It is explicitly visible during pan shots or when cars a moving from the one side of the picture to the other.
And the larger the file is, the worse it gets... The lag with dvds or large mkv-files is even worse and not watchable anymore!
My machine should be capable of running a film on fullscreen on an external monitor though, at least it does under XP on the same screen. Flawlessly!! And since arch is a minimal system, it should work! I am experiencing these problems with gnome2 and xfce as well, so it cant be related to gnome3!

Im also experiencing lags with the Gnome shell, for example when i move my mouse to the activities button in the upper-left corner or when i am moving windows with the mouse.

And last but not least firefox is very laggy while scrolling. But since even users with faster machines experience slight problems of that matter with firefox, i dont think that this problem is related to my card.

I could stand the issues with the Gnome shell and firefox, but i at least want to be able to watch a film with my computer!

I hope that my computer isnt simply to slow...

Greets

Last edited by gunjah292 (2011-12-21 20:09:44)

jasonwryan · 2011-12-14 02:58:58

What driver are you using?

I have exactly the same card in my EeePC and use the standard xf86-video-intel driver and have no issues (and only 2 GB RAM).

Gusar · 2011-12-14 10:30:59

What is the combined resolution of your two displays? If it's above 2048x2048, rearrange the displays so that it'll be under 2048x2048.

Also, post the output of

glxinfo | grep OpenGL

gunjah292 · 2011-12-14 13:38:57

@jasonwryan: I use the intel driver of course.

Gusar wrote:

What is the combined resolution of your two displays? If it's above 2048x2048, rearrange the displays so that it'll be under 2048x2048.
Also, post the output of
glxinfo | grep OpenGL

My notebook has a resolution of 1024x600 and my monitor 1920x1080. But i never use both screens at the same time, i always turn the notebook screen of and the monitor on!

Your code doesnt give me any output at all, it says unknown command!

gunjah292 · 2011-12-14 13:46:01

I figured out that i had to install the mesa-demos package. Now glxinfo gives me the following output:

OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) 945GME x86/MMX/SSE2
OpenGL version string: 1.4 Mesa 7.11.2
OpenGL extensions:

David Batson · 2011-12-14 13:58:34

In addition to xf86-video-intel, you should use the intel-dri and possibly the lib32-intel-dri drivers. I don't think the dri drivers are currently installed. glxinfo should display a line that says: direct rendering: Yes

EDIT: You might also be able to use vaapi from libva-driver-intel

Finally, try the following to enable vsync in Gnome 3.

https://bugzilla.gnome.org/show_bug.cgi?id=657071#c2

Last edited by David Batson (2011-12-14 14:02:31)

Gusar · 2011-12-14 14:14:54

@David Batson: The "direct rendering" line actually does not tell you if you have acceleration. The "OpenGL renderer string" line is the important one. And in gunjah292's case, it looks fine.

gunjah292 · 2011-12-14 14:45:40

I installied the lib32-intel-dri, seems like i just had to copy a folder to my root directory to do this. I also installed the libva-driver-intel package.

How can i turn on vsync in gnome3? In the wiki it says that you have to enable it in your xorg.conf. But i dont have one! So i created a file called /etc/X11/xorg.conf.d/20-intel.conf with the following content:

  GNU nano 2.2.6      File: /etc/X11/xorg.conf.d/20-intel.conf                  

 Section "Device"
    Identifier "Device0"
    Driver "intel"
    Option "SwapbuffersWait" "true"
 EndSection

But I dont think that it is enabled because the lag in the video persists. Any idea how I can enable it?

glxinfo output stayed the same, but my card is now identified in the gnome system-information tab!

Last edited by gunjah292 (2011-12-14 22:22:16)

gunjah292 · 2011-12-14 14:58:25

HAHA!! The trick was not to enable VSync but to disable it!

I just changed the SwapBuffersWait Option to "false".

I have around 300 FPS now and my video lag problem is GONE!!! Thanks for the tips! I will mark this solved now!

Last edited by gunjah292 (2011-12-14 14:59:20)

David Batson · 2011-12-14 23:19:37

gunjah292 wrote:

HAHA!! The trick was not to enable VSync but to disable it!
I just changed the SwapBuffersWait Option to "false".
I have around 300 FPS now and my video lag problem is GONE!!! Thanks for the tips! I will mark this solved now!

Well, that's a surprise for me. I had to enable VSync to stop video tearing with my Intel HD 3000 GPU (Sandy Bridge).

From the Intel xorg driver man page:

Option "SwapbuffersWait" "boolean"
This option controls the behavior of glXSwapBuffers and glXCopySubBufferMESA calls by GL
applications. If enabled, the calls will avoid tearing by making sure the display scanline is
outside of the area to be copied before the copy occurs. If disabled, no scanline
synchronization is performed, meaning tearing will likely occur. Note that when enabled, this
option can adversely affect the framerate of applications that render frames at less than
refresh rate.
Default: enabled.

Glad you got it sorted!

Last edited by David Batson (2011-12-14 23:21:57)

gunjah292 · 2011-12-21 20:09:27

Damn... Seems like the problem still isn't gone! When I disable VSync the FPS rate is higher, but the lag isn't completely gone, I was wrong! It is even worse, because without VSync the picture shows some strange "lines" when something moves in the video, I think that is what is meant by tearing.
So I enabled VSync again, and I am back to the same problem! Any other ideas how to get the video output more fluent?

I also found out something very strange to me! When I am running glxgears I am having around 43 FPS, but when I am moving the mouse meanwhile it goes up to 60 FPS and the gears are running fluent.... WTF is that??

Last edited by gunjah292 (2011-12-21 20:47:00)

Arch Linux

#1 2011-12-14 02:40:54

[UNSOLVED] Graphics Card Issues with Intel 945GSE

#2 2011-12-14 02:58:58

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#3 2011-12-14 10:30:59

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#4 2011-12-14 13:38:57

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#5 2011-12-14 13:46:01

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#6 2011-12-14 13:58:34

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#7 2011-12-14 14:14:54

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#8 2011-12-14 14:45:40

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#9 2011-12-14 14:58:25

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#10 2011-12-14 23:19:37

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

#11 2011-12-21 20:09:27

Re: [UNSOLVED] Graphics Card Issues with Intel 945GSE

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