Bug 66241
| Summary: | radeon fails to initialise the monitor | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Chris Rankin (rankincj) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | NEW --- | ||
| Severity: | normal | CC: | alan, alexdeucher, szg00000 |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 3.12.2,3.12.3 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Attachments: |
dmesg log for 3.12.2
Successful boot with 3.11.10 dmesg output when radeon.hw_i2c=0 possible fix dmesg output with 2nd patch applied possible fix dmesg output from 3.12.3 + 3rd patch dmesg output from 3.12.3 + 3rd patch; original system |
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Created attachment 116961 [details]
Successful boot with 3.11.10
For reference, here is the dmesg log for a successful boot with 3.11.10.
Do you have radeon.hw_i2c=1 set somewhere? If so, it should be fixed by this commit: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fae009d15a44e5f1d938340facf4b8bc7dc69a09 Created attachment 117291 [details]
dmesg output when radeon.hw_i2c=0
I do have hw_i2c=1 in my /etc/modprobe.d/local.conf file, but the patch does not help. However, I am able to boot when I add radeon.hw_i2c=0 to the grub command line.
dmesg output is attached.
Created attachment 117321 [details]
possible fix
Does the attached patch help?
Created attachment 117331 [details]
dmesg output with 2nd patch applied
No, the additional patch did not help.
Created attachment 117461 [details]
possible fix
Does this patch work any better?
Created attachment 117501 [details]
dmesg output from 3.12.3 + 3rd patch
I have just updated a second system from 3.11.10 to 3.12.3. This new system also experienced this bug, and the 3rd patch fixes it :-).
I will test the 3rd patch on the other system next.
Created attachment 117511 [details]
dmesg output from 3.12.3 + 3rd patch; original system
The 3rd patch allows my original system to boot 3.12.3 as well.
dmesg output is attached.
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Created attachment 116951 [details] dmesg log for 3.12.2 I upgraded from Linux 3.11.10 to 3.12.2, but the monitor went blank when the radeon driver loaded. According to the dmesg log: [ 1.993793] radeon 0000:02:00.0: No connectors reported connected with modes [ 1.993795] [drm] Cannot find any crtc or sizes - going 1024x768 The full log is attached. The system behaves properly when reverting to 3.11.10. I have a HD4890 / RV790 PCIE graphics card. Booting with radeon.aspm=0 or radeon.dpm=0 does not help.