https://bugs.freedesktop.org/show_bug.cgi?id=106671
--- Comment #17 from Alan W. Irwin Alan.W.Irwin1234@gmail.com --- I terminated the last test immediately because it turns out a new kernel (Linux merlin 4.18.0-1-amd64 #1 SMP Debian 4.18.6-1 (2018-09-06) x86_64 GNU/Linux) has propagated from Debian Unstable to Debian Testing = Buster so I will use that kernel for my new test. On boot with this new kernel the usual blast of random color on the Linux console displayed by the RX 550 that I am used to for all previous kernel versions is now gone. So that is a positive step in the right direction, and I hope that means the Debian Buster graphics stack is finally completely stable for the RX 550, but I will test that hypothesis with this latest test.
The latest Debian Buster graphics stack versions for this direct graphics kernel stability test for the RX 550 are as follows:
linux-image-4.18.0-1-amd64 4.18.6-1 amd64-microcode 3.20180524.1 firmware-amd-graphics 20180825+dfsg-1 libdrm-amdgpu1:amd64 2.4.94-1 libglapi-mesa:amd64 18.1.7-1 xserver-xorg-video-amdgpu 18.0.1-1+b1
Here are my kernel parameters which includes the suggested idle=nomwait: irwin@merlin> cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.18.0-1-amd64 root=UUID=1e45a1ee-a5d6-4327-9a7b-2663ffc0b157 ro rootwait quiet idle=nomwait