On Fri, Oct 18, 2019 at 10:12:08PM +0000, Mikolaj Kucharski wrote: > >Synopsis: kernel freeze, blank screen the moment Xorg starts > >Category: kernel > >Environment: > System : OpenBSD 6.6 > Details : OpenBSD 6.6-current (GENERIC.MP) #380: Fri Oct 18 > 00:00:48 MDT 2019 > > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > Architecture: OpenBSD.amd64 > Machine : amd64 > > >Description: > It's enough to enable xenodm and reboot the system. Hard freeze 100% > reproducible. I mounted filesystem with `sync` option to get something > in Xorg.0.log as otherwise file was always empty. Wrapped > /usr/X11R6/bin/X with ktrace, but trace file is always empty. Any clues > how to approach this troubleshooting would be appreciated. I have > ddb.console=1 in sysctl.conf, but when system freezes ALT+CTRL+ESC > doesn't do anything, or at least I don't see any feedback. I cannot ping > machine remotely via USB attached Wi-Fi (urtwn0), after the blank screen > (freeze). > > >How-To-Repeat: > rcctl -f restart xenodm > > >Fix: > Unknown. Disable xenodm as workaround or `Option "AccelMethod" "none"` > for modesetting driver in xorg.conf.
This has occurred since the drm update on Braswell. Cause currently unknown. See https://marc.info/?t=156362629400001&r=1&w=2
