From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 65911] New: radeon: garbled output/only noise through HDMI and
GPU lockups
Date: Wed, 27 Nov 2013 04:00:14 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=65911
Bug ID: 65911
Summary: radeon: garbled output/only noise through HDMI and GPU
lockups
Product: Drivers
Version: 2.5
Kernel Version: 3.12.1
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-dri@kernel-bugs.osdl.org
Reporter: tom@voodoo-arts.net
Regression: No
Created attachment 116301
--> https://bugzilla.kernel.org/attachment.cgi?id=116301&action=edit
dmesg 3.12.1 with radeon.audio=1
Hi, I am not able to start X on computer with an ATI Radeon HD 7540D graphics
card through HDMI running the linux 3.12.1 kernel. I also tried with 3.10.10
which didn't change anything. I can see my TTY without any problems, though.
Starting X however gives me a totally messed up sceen without any structure or
information---is is basically color noise. Here and there a black or blue
block, but in general it is noise.
Looking at the logs, I can see that there are GPU lockups after which X resets
it. This happens indenpently of me setting radeon.audio=1 or 0. However, I've
attached a dmesg output with radeon.audio=1 and with radeon.audio=0.
After a couple of GPU lockups the kernel will eventually panic. This is the top
of the callstack:
Call Trace:
? __wake_up
drm_send_vblank_event [drm]
radeon_crtc_handle_flip [radeon]
evergreen_irq_process [radeon]
I've see issues #60709 and #60687, but the fix posted there is already in my
kernel and aparantly doesn't fix my issue. I also tried something suggested in
#60687: hdmi regset 0x12c44 0x00000033
With radeon.audio=0, before I try to start X:
OLD: 0x12c44 (12c44) 0x00000033 (51)
NEW: 0x12c44 (12c44) 0x00000033 (51)
With radeon.audio=0, after I have started X:
OLD: 0x12c44 (12c44) 0x00000000 (0)
NEW: 0x12c44 (12c44) 0x00000033 (51)
With radeon.audio=1, before I try to start X:
OLD: 0x12c44 (12c44) 0x00000000 (0)
NEW: 0x12c44 (12c44) 0x00000033 (51)
With radeon.audio=1, after I have started X:
OLD: 0x12c44 (12c44) 0x00000033 (51)
NEW: 0x12c44 (12c44) 0x00000033 (51)
All this, however, didn't change anything.
If readeon.audio=1 is set, I can play audio over HDMI until there a GPU lockup
and again after the GPU reset.
I've also tried radeon options dpm and no_wb without any success. It also
didn't help to add 'Option "AccelMethod" "EXA"' to the radeon driver/device
section in /etc/X11/xorg.conf.d/20-radeon.conf.
Are there more things I could test or provide?
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