https://bugs.freedesktop.org/show_bug.cgi?id=99311
Bug ID: 99311 Summary: [regression,radeonsi] Updating to 1edc53a66b breaks SDDM (white screen on launch) Product: Mesa Version: git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Keywords: regression Severity: major Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: kai@dev.carbon-project.org QA Contact: dri-devel@lists.freedesktop.org
Somewhere between c93efb0a4f and 1edc53a66b a regression was introduced, causing SDDM launching into a pure white screen instead of the login screen. There's nothing logged to either /var/log/Xorg.0.log or /var/log/sddm.log and dmesg is also clear. Downgrading to c93efb0a4f lets me login again.
I have not bisected yet, but maybe this information is already enough to find the cause. For the full stack affected by this regression, please see below.
GPU: Hawaii PRO [Radeon R9 290] (ChipID = 0x67b1) Mesa: Git:master/1edc53a66b + the modified version of attachment 127812 libdrm: 2.4.74-1 LLVM: SVN:trunk/r291276 (4.0 devel) + https://reviews.llvm.org/D26348?download=true X.Org: 2:1.19.0-3 Linux: 4.9.1 Firmware: 20161130-2 libclc: Git:master/b906699f68 DDX (amdgpu): 1.2.0-1+b1
Let me know, if you need anything else (besides a bisect).