Nouveau - Dec 2015 - [Bug 93250] New: After VGA change monitor do not detects properly

https://bugs.freedesktop.org/show_bug.cgi?id=93250

            Bug ID: 93250
           Summary: After VGA change monitor do not detects properly
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: vourlo at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 120354
  --> https://bugs.freedesktop.org/attachment.cgi?id=120354&action=edit
Kernel log

Hello!

I've changed VGA from Geforce GTX 470 to 980.
My distro is openSUSE 13.2. From the moment of installation I've used
nouveau
driver and it worked very well. I have DELL U2415 monitor attached via HDMI.
Since the switch the monitor is detected as default and the resolution is set
to 1024X768.
Using the 'nomodeset' parameter can rise the resolution to 1600X1200,
but
monitor is still not detected, and no native resolution can be picked.

Thank you in advance,
Piotr.

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https://bugs.freedesktop.org/show_bug.cgi?id=93250

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
[    0.000000] Linux version 3.16.7-29-desktop (geeko at buildhost) (gcc version
4.8.3 20140627 [gcc-4_8-branch revision 212064] (SUSE Linux) ) #1 SMP PREEMPT
Fri Oct 23 00:46:04 UTC 2015 (6be6a97)

I believe nouveau gained modesetting support for GM20x in Kernel 3.19.
Additional fixes were made in later kernel versions too. Feel free to reopen if
it doesn't work with kernel 4.2 or later.

Note that 'nomodeset' completely prevents nouveau from doing anything at
all,
so you end up using vesa or whatnot.

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