[Bug 200633] New: [Regression] VGA not being detected with R9 380 using AMDGPU after 4.17 kernel update.

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=200633

            Bug ID: 200633
           Summary: [Regression] VGA not being detected with R9 380 using
                    AMDGPU after 4.17 kernel update.
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.17
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: low
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: syboxez at gmail.com
        Regression: No

OS: Debian Sid
Kernel: 4.17.8
GPU: AMD R9 380
Mesa version: 18.1.4

After upgrading from 4.16 to 4.17 (this bug was also reproduced on 4.18-RC3),
xrandr reports VGA displays (normally DVI-I-1 in my case) as digital displays
(DVI-D-1), and will display a black screen on the monitor I am attempting to
use. In 4.16, it worked perfectly. Booting the system with the 4.16 kernel
resolves the issue.

I will be happy to collect any useful logs upon request, as I'm not too sure
what to look for.

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