[Bug 28444] New: no image / bad image on external monitor

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Jun 8 06:25:41 PDT 2010


           Summary: no image / bad image on external monitor
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: wout at bliepbliep.net
         QAContact: xorg-team at lists.x.org

Created an attachment (id=36141)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36141)
monitor image using HDMI


I have a Sony VAIO VPC EB1M1E laptop with an ATI Radeon HD5600 series graphics
chip (Redwood). Apart from the laptop screen it has one HDMI and one VGA
connector. Using the xorg radeon driver I have not been able to get a usable
image on my external monitor (Iiyama ProLite E2403WS, 24" LCD).

I am currently running a self compiled version of the radeon driver (pulled
from git repository). Version is 6.13.99. When I connect the external monitor
to the VGA port I get no image at all (black screen). Xrandr does see the
monitor and selects the appropriate mode (1920x1200). If I use the HDMI instead
the best I get is a garbled image (photo attached). Again xrandr sees the
monitor and selects the appropriate mode.

So it looks like things are almost working: the monitor is detected properly;
xrandr shows the right video modes; with HDMI the monitor shows an image that
resembles my desktop.

I've attached a photo showing laptop and monitor. The monitor is connected via
HDMI. Also attached is xrandr output for HDMI and the Xorg log.

I'm happy to try different versions of the driver, apply patches, provide more
info, etc. etc. Just let me know what is needed.

All the best,

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