Created attachment 142831 [details] dmesg with 4.20.0-042000rc6-generic kernel Various temporary UI freezes when booting Ubuntu 18.10. dmesg reports various amdgpu warnings and errors. Also tested with 4.20.0-042000rc6-generic kernel
Original launchpad bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1807511
With 4.20.0-042000rc7-generic it is actually worse. The system hangs with a black screen while booting with power adapter connected. Without power adapter it does boot.
Created attachment 142842 [details] Kern.log of failed boot (black screen) with 4.20.0-042000rc7-generic
Created attachment 142843 [details] dmesg with 4.20.0-042000rc7-generic without ac adapter
Use latest AMd wip kernel, firmware files and Oibaf ppa. https://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-4.21-wip https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/log/amdgpu https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers
With v5.0-rc1 the system hangs with a black screen after I login at gdm when the power adapter is connected
Created attachment 143004 [details] kern.log using kernel v5.0-rc1 with black screen after login with power adapter plugged in
Without the power adapter connected v5.0-rc1 hangs with black screen at login screen before actual login.
Created attachment 143016 [details] kern.log using kernel v5.0-rc1 with black screen before login without power adapter plugged in
hey i have opened a bug report here: https://bugzilla.kernel.org/show_bug.cgi?id=201077 and i want to let you know that you can use 4.16 or 4.15 kernels for temporary solution and all the people effected from this bug seem to using aspire 5 a515-41g laptop, also i updated to 1.09 bios and still there is no fix. amd wanted from me to bisect the kernel but i could only found the main commit and it contains dozens of other commits, but if you want to bisect the kernel that's might be helpful
I have bisected the bug, also i have reported it: https://bugzilla.kernel.org/show_bug.cgi?id=201077 its been a month since reporting it to linux kernel amd team, they acknowledged the problem.
its actually been more then two months since reporting it, its not fixed yet
> its actually been more then two months since reporting it, its not fixed yet You (or anyone else) needs to volunteer to investigate and provide a patch.
Issue has been gone! As of 5.3.0-050300rc1-generic #201907212232 the issue is have been gone. i have downloaded and installed the kernel via mainline kernel update utility on Pop_OS! tested both vulkan and opengl. https://bugzilla.kernel.org/show_bug.cgi?id=201077#c37
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