http://bugzilla.kernel.org/show_bug.cgi?id=14498
Summary: [drm-n...@radeon] Enabling KMS on RS780 produces GFP
and blackscreen
Product: Drivers
Version: 2.5
Kernel Version: 2.6.31-rc9-drm-next-27175-gc182be3
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
AssignedTo: drivers_video-...@kernel-bugs.osdl.org
ReportedBy: liquid.a...@gmx.net
Regression: Yes
Created an attachment (id=23556)
--> (http://bugzilla.kernel.org/attachment.cgi?id=23556)
kernel output from the radeon module + crash
Hi there,
I'm currently using the drm-next branch of Dave Airlie, which you can find
here:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=shortlog;h=refs/heads/drm-next
I was previously using a snapshot with commit id
d0c403e950d449c8c413a1fbf05dfec45ce03e55, but updated my tree yesterday,
incorporating the 12 new commits (now at commit id
c182be37ed7cb04c344501b88b8fdb747016e6cf).
Now KMS on my Radeon HD3200 (RS780) is heavily broken. Before the pull I could
at least load the radeon module with modeset=1 and it would switch to higher
resolution, starting X was possible and so on.
Now it generates a GPF, the output dies (screen looses input) and soon the
screen switches to standby. I could still ping the machine, but ssh-ing into it
was not possible anymore. I safely rebooted with magic SysRq and did take a
look at the kernel log, where the interesting bits are attached.
The attached output is a normal IBM CRT, model P260 - a rather old CRT designed
for CAD.
Greets,
Tobias
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