[Bug 103401] X with radeon/amdgpu crashes under lightdm and sddm but not xdm and startx

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Oct 22 12:49:57 UTC 2017


--- Comment #2 from Sergey Kondakov <virtuousfox at gmail.com> ---
Created attachment 134988
  --> https://bugs.freedesktop.org/attachment.cgi?id=134988&action=edit

Custom BIOS that I use which is based on stock secondary, 1150/2100, XFX BIOS
that was aimed at low core power and overclocked memory. I've used 1300/2000
while keeping tight timings (in comparison to primary, 1366/2000, stock BIOS)
and automatic voltage control ('6528[1-8]' values). But I did lower power
throttling while dramatically increasing aggressiveness of fans and temperature
throttling & shutdown.

Stock BIOSes both had static '750mV' voltage for lowest core frequency and
amdgpu kernel module didn't like that, it would complain about any static
I've also made custom Hynix timings for 500Mhz (replacement for default 300Mhz
in hope that it will switch to 1000Mhz less) which wasn't easy but it seem to
work without issues now.

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