Comment # 5
on bug 104854
from José Pekkarinen
Created attachment 138467 [details] 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.
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