Arch Linux

Guzzista

Member

From: /etc

Registered: 2014-06-02

Posts: 14

[Solved] Strange video artifacts appears with integrated video adapter

Hello,
I have a laptop, a Lenovo Thinkpad W500.

When I use the integrated video adapter, which is a Intel GMA 4500MHD (integrated in chipset Intel GM45, PCI ID: 8086:2a42) the system become unusable, because all the software I use show graphics problems like in this image:
http://oi58.tinypic.com/5pomr7.jpg

This strange error appears also while watching videos (with any software), and it can happen in any part of the screen, at random.

Everything is ok using the discrete video adapter (a AMD/ATI RV635/M86 [Mobility Radeon HD 3650]).

Do you know how to detect the cause of this problem? I don't even know if it is a software bug or a video card problem.

For now I tried only with archlinux using kernel 4.0.6-1-ARCH, since it is the only operating system I have, I want to try also with a ubuntu live asap.

Last edited by Guzzista (2015-07-02 07:45:30)

Malkymder

Member

Registered: 2015-05-13

Posts: 258

Re: [Solved] Strange video artifacts appears with integrated video adapter

A place to start could be looking at logs:

Check if you see corruption on the bios/boot screen page and console screen (TTY)... if you do its, probable that it's a hardware issue.

if not check

/etc/var/Xorg.0.log

P.S. love your avatar ... cheers !

Last edited by Malkymder (2015-06-29 15:44:03)

Gusar

Member

Registered: 2009-08-25

Posts: 3,607

Re: [Solved] Strange video artifacts appears with integrated video adapter

Known bug. Switch to UXA acceleration as a temporary workaround. More info here: https://bbs.archlinux.org/viewtopic.php?id=198953

Guzzista

Member

From: /etc

Registered: 2014-06-02

Posts: 14

Re: [Solved] Strange video artifacts appears with integrated video adapter

Hello everybody,
thank you for the suggestion, switching to uxa seems to be a working workaround.
Now at every intel driver upgrade I will try to go back to sna and see if problem has been fixed.

Cheers!