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

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28444

--- Comment #14 from Wout <wout at bliepbliep.net> 2010-06-09 09:33:33 PDT ---
(In reply to comment #13)
> Make sure the 2.6.34 kernel has kms enabled.  You'll need kms for working
> digital outputs on most evergreen cards.

I got it working using only Debian packages (no need to compile the driver
myself after all).

* Kernel 2.6.34 from experimental
* Firmware "nonfree" package from squeeze (testing)
* DRM packages from experimental
* Radeon driver from unstable

I had to force load the radeon kernel module (added it to /etc/modules). Note
that this kernel is compiled with these DRM/KMS/radeon related options:
    CONFIG_DRM=m
    CONFIG_DRM_KMS_HELPER=m
    CONFIG_DRM_TTM=m
    CONFIG_DRM_TDFX=m
    CONFIG_DRM_R128=m
    CONFIG_DRM_RADEON=m
    # CONFIG_DRM_RADEON_KMS is not set
    CONFIG_DRM_I810=m
    CONFIG_DRM_I830=m
    CONFIG_DRM_I915=m
    # CONFIG_DRM_I915_KMS is not set
    CONFIG_DRM_MGA=m
    CONFIG_DRM_SIS=m
    CONFIG_DRM_VIA=m
    CONFIG_DRM_SAVAGE=m

Version list of Debian packages:
firmware-linux-nonfree/squeeze uptodate 0.24
libdrm-radeon1/experimental uptodate 2.4.20-3
libdrm2/experimental uptodate 2.4.20-3
linux-image-2.6.34-1-amd64/experimental uptodate 2.6.34-1~experimental.2
xserver-xorg-video-radeon/unstable uptodate 1:6.13.0-2

No special X11 configuration was required.
At this point it works nicely.

One weird thing still happens: When I log out, the X server gets restarted. It
displays the login screen on my laptop. One second later the external monitor
displays a chaotic horizontal line pattern that appears to scroll vertically.
After logging in the external monitor goes blank (laptop screen works). I can
get the external monitor back to work normally using xrandr so I'm not fussed.

Thanks for your help and for all the great work on the driver, Alex!

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