Bug 99651
| Summary: | third monitor connected via dvi does not work on radeonhd 7770 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Gluzskiy Alexandr (sss123next) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | NEW --- | ||
| Severity: | high | CC: | alexdeucher, szg00000 |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.0.5 and higher (tested on 4.1-rc7 also) | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Attachments: |
dmesg with some drm errors
xrandr --verbose on 4.0.4 xorg log on 4.0.4 xrandr --verbose on 4.0.5 xorg log on 4.0.5 |
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what type of monitors/adapters are you using? I suspect the following commits may be at fault: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a10f0df0615abb194968fc08147f3cdd70fd5aa5 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7fe04d6fa824ccea704535a597dc417c8687f990 Please attach your xorg log and xrandr --verbose output. Created attachment 179381 [details]
xrandr --verbose on 4.0.4
all working fine here, just for monitor info
Created attachment 179391 [details]
xorg log on 4.0.4
xorg log on working system, just to get config info
Created attachment 179401 [details]
xrandr --verbose on 4.0.5
on broken system, third monitor does not work, the one with 1280x1024 resolution
Created attachment 179411 [details]
xorg log on 4.0.5
on broken system, third monitor does not work, the one with 1280x1024 resolution
i have reverted both commits and it's fixes a problem |
Created attachment 179171 [details] dmesg with some drm errors after kernel update to 4.0.5 my third monitor stopped working (black screen with blinking standby indicator), but console resolution is adjusted to lowest monitor resolution, the one which is not working, so i guess driver see it and trying to use, look in dmesg in attachment