[Bug 21963] New: (mild) screen corruption on left rotated display (RS780)

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=21963

           Summary: (mild) screen corruption on left rotated display (RS780)
           Product: xorg
           Version: 7.4
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: cryptooctoploid at gmail.com
         QAContact: xorg-team at lists.x.org
                CC: cryptooctoploid at gmail.com


I've build a new AM3 workstation with the 790GX chipset recently.
The motherboard has a build Radeon HD 3300 (RS780) graphic card.
My monitor runs in portrait mode (xrandr --output DVI-0 --rotate left).

With this setup my display gets corrupted as follows:

- In xterm when I type commands in the shell there appears a thin vertical line
  after each character.
- When I start inkscape with a blank document on a virtual desktop and
  switch to another desktop and then back to inkscape, random black vertical
  lines appear on the screen. The pattern of the lines changes every time
  I switch back and forth again.
- When I switch to a running mc (midnight commander) in my (gnu-)screen
  session, random white vertical lines appear on the screen.  The pattern
  of the lines changes every time I switch back and forth again.

I've tried to capture the corruption with a screenshot, but the screenshots
are always uncorrupted.


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