Arch Linux

jlindgren

Member

Registered: 2011-02-27

Posts: 260

Blank screen with kernel 2.6.38 and ATI Radeon

Using kernel26 2.6.38 from testing, my screen goes blank during boot when it gets to setting the video mode with KMS.  If I hit control-c, then there is some disk activity for a little while, so apparently the system isn't completely frozen.  My card is an ATI Radeon Mobility HD 3650.  I can boot fine with radeon.modeset=0, but then I lose the power saving features that KMS enables.  Everything is fine again if I downgrade to 2.6.37.  It's not a problem specific to Arch; it happens in Debian also.  So it's definitely something about the 2.6.38 kernel.  Does anyone know of a fix for this?

t1nk3r3r

Member

From: The Pacific Northwest

Registered: 2011-03-22

Posts: 79

Re: Blank screen with kernel 2.6.38 and ATI Radeon

which ATI driver are you using?

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tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,839

Re: Blank screen with kernel 2.6.38 and ATI Radeon

Check if its been reported upstream - if not, do it yourself.

Include your video card details - radeon and 2.6.38 are working fine for me here, with XPRESS 200M (R300).

jlindgren

Member

Registered: 2011-02-27

Posts: 260

Re: Blank screen with kernel 2.6.38 and ATI Radeon

@t1nk3r3r: The open source driver ("radeon").  fglrx does not support KMS.

@tomk: https://bugs.freedesktop.org/show_bug.cgi?id=35502.  This is an r600 card, so I doubt the same problem would affect an r300.