Graphics driver Intel GMA 3150

[perjarle]

Hello all
I am running a small custom made Debian Linux (2.6.36.1) which runs a video application.

When running video in fullscreen I notice that the video flow is low.

I suspect that I may have an issue with the graphics driver.

The mainboard is an Intel D525MW with integrated graphics.

According to documentation from Intel, there is a GMA 3150 running on this mainboard.

When I run lspci I see that the kernel uses i915 driver.

Does anyone know if this is the proper driver to use?

Best regards
Per-Jarle Sæther

[cynwulf]

I'm not sure what you mean by "video flow is low".

Anyway first check if direct rendering is enabled

glxinfo | grep -i render

[perjarle]

Hello, and thank you for your reply

By low video flow I mean that the video goes slow and with slow framerate.

When not in fullscreen it goes very well.

glxinfo | grep -i render returns:
direct rendering: Yes
OpenGL renderer string: Mesa DRI Intel(R) IGD GEM 20091221 2009Q4 x86/MMX/SSE2

Best regards
Per-Jarle Sæther

[cynwulf]

No problems there. What changes have you made to the custom kernel?

I'm assuming it's actually Debian 6 Squeeze you're running, with a custom kernel? If it's anything older than Squeeze, you need to upgrade.

If you are running Squeeze - add the squeeze-backports repo, and install the following packages

The 2.6.39 kernel for whichever architecture you use (e.g: linux-image-2.6.39-bpo.2-amd64)

And also:

xserver-xorg-video-intel libdrm-intel1 libdrm2

Reboot into the new kernel - see if that helps.

[Roxoff]

I have two Intel Atom boards with this graphics chipset. The video output on these isn't the greatest, when I was researching them one of the reports I read was that it struggled with full screen video at high resolutions. It certainly wasn't capable of 1080p or even 1080i.

I'd recommend you tried with a lower resolution video and see how far you can push it, but don't expect miracles. The board does have a PCI socket, so you do have an option to get a PCI video card - I recall one manufacturer recently was providing fairly new nVidia graphics cards in PCI format rather than PCIe.

Keep trying Caravel's suggestions though. I'd be interested to hear how far you get with this.