[CentOS] ATI Radeon Mobility M6 LY & IBM Thinkpad R40
btmanmeh at verizon.net
Tue Mar 28 16:10:57 UTC 2006
Does anyone have any experience with the combination of a Thinkpad R40
and the ATI Radeon Mobility M6 LY video chip? I've had CentOS 4.1, 4.2,
and now 4.3 running just great with 1024x768 resolution, but according
the IBM specs, this chip is capable of 1280x1024.
A quick lspci -v | grep ATI spewed the following:
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility
M6 LY (prog-if 00 [VGA])
I can successfully change the settings under the display menu to
1280x1024, but upon restarting X the default greeter crashes. After
that, it picks another greeter and allows me to log in, with it still
picking 1024x768. I've played around with trying to manually change the
settings in /etc/X11/xorg.conf file. I've tried various depth settings
to no avail.
The section identifying the card in xorg.conf is:
VendorName "Videocard vendor"
BoardName "ATI Radeon Mobility M6"
According to what I've been reading, that's what is supposed to be
there. I've found a few things stating that DRI could be a problem, but
I'm not too familiar with this.
Also, a friend has an R40 but has the ATI Mobility Radeon 7500 chip,
instead of the M6 like mine. He's also running CentOS 4.3 and having the
exact same problem I'm having. Same deal, according to the IBM specs his
chipset as well as mine should be capable of 1280x1024. Any thoughts or
related experience with this? If not, it's not a huge deal, I've been
using it 1024x768 for well over a year now, but the extra resolution
would be wonderful. Thanks!
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