Re: [gentoo-user] Blank screen after hibernation with radeon driver

[Fernando Rodriguez]

On Sunday, June 21, 2015 11:36:23 AM Matti Nykyri wrote:
> > On Jun 21, 2015, at 2:16, Fernando Rodriguez
<frodriguez.developer@×××××××.com> wrote:
> >
> > On Saturday, June 20, 2015 10:15:37 AM Matti Nykyri wrote:
> >>> On Jun 20, 2015, at 5:16, Fernando Rodriguez
> > <frodriguez.developer@×××××××.com> wrote:
> >>>
> >>> Hello,
> >>>
> >>> After switching from fglrx to the radeon driver I get a blank screen
after 
> >>> resuming from hibernation. I can ssh in but I can't restart xorg. This
> > happens
> >>> with pm-utils and also with systemd. Suspend works fine with both.
> >>>
> >>> My video card is:
> >>> VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini
> >>> [Radeon HD 8210]
> >>>
> >>> Any suggestions?
> >>
> >> Ssh in and run commands:
> >>
> >> export DISPLAY=:0
> >> xrandr
> >> Or
> >> xrandr --output --mode etc with right arguments
> >>
> >> If that doesn't help, use top and perf top to see what is going on. Does
> > restarting X fix te issue?
> >
> > I can't restart X, it hangs when I try, xrandr also hangs. Even kill -9
> > doesn't kill it. The logs sometimes don't show anything at all but today
it's 
> > show this consistently:
> >
> > un 20 18:19:08 navi kernel: [drm:cik_ring_test] *ERROR* radeon: ring 1
test 
> > failed (scratch(0x3010C)=0xCAFEDEAD)
> > Jun 20 18:19:08 navi kernel: ata1: SATA link up 6.0 Gbps (SStatus 133
SControl 
> > 300)
> > Jun 20 18:19:08 navi kernel: ata1.00: configured for UDMA/133
> > Jun 20 18:19:08 navi kernel: [drm:cik_ring_test] *ERROR* radeon: ring 2
test 
> > failed (scratch(0x3010C)=0xCAFEDEAD)
> > Jun 20 18:19:08 navi kernel: [drm] ring test on 3 succeeded in 4 usecs
> > Jun 20 18:19:08 navi kernel: [drm] ring test on 4 succeeded in 4 usecs
> > Jun 20 18:19:08 navi kernel: [drm] ring test on 5 succeeded in 1 usecs
> > Jun 20 18:19:08 navi kernel: [drm] UVD initialized successfully.
> > Jun 20 18:19:08 navi kernel: [drm] ring test on 6 succeeded in 812 usecs
> > Jun 20 18:19:08 navi kernel: [drm] ring test on 7 succeeded in 3 usecs
> > Jun 20 18:19:08 navi kernel: [drm] VCE initialized successfully.
> > Jun 20 18:19:08 navi kernel: [drm] ib test on ring 0 succeeded in 0 usecs
> > Jun 20 18:19:08 navi kernel: [drm] ib test on ring 3 succeeded in 0 usecs
> > Jun 20 18:19:08 navi kernel: [drm] ib test on ring 4 succeeded in 0 usecs
> > Jun 20 18:19:08 navi kernel: [drm] ib test on ring 5 succeeded
> > Jun 20 18:19:08 navi kernel: [drm] ib test on ring 6 succeeded
> > Jun 20 18:19:08 navi kernel: [drm] ib test on ring 7 succeeded
> > Jun 20 18:19:08 navi kernel: [drm:radeon_dp_link_train_cr] *ERROR*
displayport 
> > link status failed
> > Jun 20 18:19:08 navi kernel: [drm:radeon_dp_link_train_cr] *ERROR* clock
> > recovery failed
> > Jun 20 18:19:08 navi kernel: [drm:radeon_dp_link_train_cr] *ERROR*
displayport 
> > link status failed
> > Jun 20 18:19:08 navi kernel: [drm:radeon_dp_link_train_cr] *ERROR* clock
> > recovery failed
> >
> > --------
> >
> > On one occassion there where about 20 backtraces on the log. That log is
gone 
> > but it had a message basically saying (I don't remember the exact words)
that 
> > something went wrong and the kernel recovered but a reboot was still
needed. 
> > I'll post if it comes up again.
> >
> > Also relevant that I've been getting this and similar errors on my logs
for a 
> > few days (probably since I switched to the radeon driver), all the i2c
devices 
> > are on the video card:
> >
> > Jun 20 16:46:30 navi kernel: i2c i2c-7: sendbytes: error -110
> > Jun 20 16:46:41 navi kernel: i2c i2c-7: sendbytes: error -110
> > Jun 20 16:47:01 navi kernel: i2c i2c-7: sendbytes: error -110
> > Jun 20 16:47:11 navi kernel: i2c i2c-7: sendbytes: error -110
> > Jun 20 16:47:31 navi kernel: i2c i2c-7: sendbytes: error -110
>
> What is the output of:
>
> perf top
>
> Do you have kernel debugging symbols compiled in? If then do kernel function
trace.
>
> See what an strace to X shows.
>
>

Sorry, it's attached now. I forgot to mention this happens regardless of 
whether Xorg is running or not when I hibernate.

I don't know what happened to the strace file, I will do it again in a little 
while (gotta leave in a minute), but the only thing that I noticed is that it 
keeps getting a SIGALARM signal.

Thanks

-- 
Fernando Rodriguez