[Bug 99311] [regression, radeonsi] Updating to 1edc53a66b breaks SDDM (white screen on launch) - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 99311] [regression, radeonsi] Updating to 1edc53a66b breaks SDDM (white screen on launch)
Date: Sat, 07 Jan 2017 17:32:50 +0000	[thread overview]
Message-ID: <bug-99311-502@http.bugs.freedesktop.org/> (raw)

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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).

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