https://bugs.freedesktop.org/show_bug.cgi?id=104854
--- Comment #5 from José Pekkarinen koalinux@gmail.com --- Created attachment 138467 --> https://bugs.freedesktop.org/attachment.cgi?id=138467&action=edit backtrace trying drm-4.17
As stated in bug 105760, drm-4.17 didn't make any difference for me, though, setting acpi_backlight=intel_backlight, as mentioned in(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1656649), allowed me to boot once without any backtraces, using an stable kernel:
$ DRI_PRIME=1 glxinfo ... OpenGL vendor string: X.Org OpenGL renderer string: AMD Radeon (TM) R7 M360 (ICELAND / DRM 3.23.0 / 4.15.12+, LLVM 6.0.0) OpenGL core profile version string: 4.5 (Core Profile) Mesa 18.0.0 OpenGL core profile shading language version string: 4.50 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile ...
I'll try to reboot several times to see if the work around works always, and let you know about it.
Thanks!
José.