Bug#890067: libgl1-mesa-dri: breaks kde experimental (sddm or sddm-greeter crash, ksplashscreen crash)

[Eric Valette <eric.valette@free.fr>]

On 2/12/18 10:36 AM, Timo Aaltonen wrote:
> On 10.02.2018 20:57, Eric Valette wrote:
> > Package: libgl1-mesa-dri
> > Version: 18.0.0~rc2-1
> > Severity: critical
> > Justification: breaks unrelated software
> >
> > After sucesfully upgrading this machine with experimental kde; libc6, mesa, I went down and upgraded htpc and kids pc that are
> >
> > AMD A4-5000
> > AMD E2-1800
> > AMD E1
> >
> > respectively and all did break preventing to log in any way in kde session.
> > Becasue one of the crash in one machine reported once  a bug in r600_dri.so
> > ksplashqml[1148]: segfault at 7ffcac73c000 ip 00007f9bf07d5be5 sp 00007ffcac739bf8 error 6 in r600_dri.so[7f9bf0394000+a86000]
>
> 18.0.0-rc4 is now pushed to experimental, please try with it once it's
> built but if the driver still crashes, file a bug upstream.
Only tested on one of the failing machines (AMD A4-5000) : works 
correctly this time (no crash in sddm or sddm-gretter or ksplashscreen, 
and I manage to log in and get my session)

Only strange message in dmesg output is: radeon_dp_aux_transfer_native: 
74 callbacks suppressed.

Note sure I will try to break again kids PC after the nightmare week-end 
I got due this bug, even if I know how to fix now :-)

So I hope it means they really fixed it upstream for all amd devices...

-- eric