[Nouveau] [Bug 93373] New: sometimes hickup with persistent garbaby

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93373

            Bug ID: 93373
           Summary: sometimes hickup with persistent garbaby
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: blade at debian.org
        QA Contact: xorg-team at lists.x.org

Created attachment 120498
  --> https://bugs.freedesktop.org/attachment.cgi?id=120498&action=edit
Screenshot just after the hickup

Version:

ii  xserver-xorg-v 1:1.0.12-1   amd64        X.Org X server -- Nouveau display

See attached screenshot. How it happens? Everything works normal (except for
some minor glitches like the substring "www." displayed in black-on-black
Terminator resp. Gnome Terminal).

But sometimes (once a week to every couple of days) and usually when Firefox is
in front, the screen suddenly displays lots of garbage. There are no errors in
Xorg.0.log. Usually the fonts in the main HTML area get weird or dots on them
and this stays even when the window is scrolled. Some page areas with other
fonts are sometimes also affected and they look even worse (covered in
stripes). The same applies to the GTK controls. (Note: I use thinice Gtk theme,
this fact might be related).

Anyhow, making Gtk redraw the controls (hover or click blindly) makes them
appear normal but not so with the fonts. Even when I restart Firefox, some tabs
still have areas (randomly!) with garbled letters.

Note: I had a similar issue with the previous version too but it was worse, it
also affected Terminator (Gnome Terminal renderer). Now Terminator seems to
stay unaffected, at least for now.

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