[Nouveau] [Bug 75800] New: [NVE4] [GTX660Ti] Pink line on left side of monitor and slightly blurry areas on screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75800

          Priority: medium
            Bug ID: 75800
          Assignee: nouveau at lists.freedesktop.org
           Summary: [NVE4] [GTX660Ti] Pink line on left side of monitor
                    and slightly blurry areas on screen
          Severity: minor
    Classification: Unclassified
                OS: Linux (All)
          Reporter: christian.erdmann at tu-dortmund.de
               URL: https://bbs.archlinux.org/viewtopic.php?id=98385
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Drivers/DRI/nouveau
           Product: Mesa

Created attachment 95171
  --> https://bugs.freedesktop.org/attachment.cgi?id=95171&action=edit
Additional dmesg and Xorg logs

When connecting my graphics card to my monitor (BenQ V2400 Eco) via HDMI the
behaviour described in the summary can be observed (as early as mode set via
KMS). Example pictures of the pink line can be seen in the linked Arch Linux
forums thread, the blurred areas are especially visible when viewing text.
Lowering resolution (xrandr --output ... --mode, tested 1280x720, 640x480) does
not change the thickness of the line (and doesn't make it disappear either).

The problem goes away when using the proprietary nvidia drivers in connection
with the same setup. Additionally I have tested various combinations of drivers
(nvidia, nouveau), connectors (HDMI, VGA (via DVI-to-VGA adaptor)) and monitors
(BenQ V2400 Eco, Samsung LE32A436). The respective dmesg and Xorg logs are
attached.
Note that pink line/blurry areas issue seems to exclusively occur with the
following combination: nouveau + HDMI + BenQ V2400 Eco (which happens to be my
main setup)

Versions/revisions of relevant software/hardware can be seen in the attached
logs. An MMIO trace has been sent to mmio.dumps at gmail.com along with the output
of dmesg and lspci -vvv at that time and the VBIOS (dumped via vbtracetool) of
my card. The MMIO trace itself contains a marker when the X server was started
("X is up").

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