Created attachment 19279 [details] With this config X gets the modes right, but then dies with a sig11. X refuses to set a PAL compatible mode on the VGA output, either by crashing or by saying "no usable screens found". See the attached xorg.conf and Xorg.0.log files. (The logs were taken with a TFT monitor connected on the DVI output, in addition to the TV connected on the VGA output with a VGA->RGB Scart cable. Both monitors were turned on.)
Created attachment 19280 [details] Log with the "modes_ok-sig11" config.
Created attachment 19281 [details] With this very similar config X for some reason finds no usable screens.
Created attachment 19282 [details] Log of the "no_screens" config.
This bug is present in ati-6.9.0 as well as in ati-git as of 080929.
Try the following option: Option "Colortiling" "FALSE"
Using the first config (modes_ok-sig11) but with color tiling off, X starts. I get a black screen on my VGA connected TV, and a normal screen on my TFT monitor. There seems to be a signal from the VGA connector that the TV is able to sync to, even if the picture is all black. DISPLAY=:0.1 mplayer <video file> still gives no output on the TV screen. (The "no screens" bug might not be related, so let's ignore that for now.)
With the TFT monitor disconnected I still only get a black picture on the TV. (I know the cable works; I can get a picture on my TV with a different source, and the TV syncs to the "black" signal from this computer.) I attach the log file from this scenario.
Created attachment 19283 [details] Only TV connected, still black screen.
It seems the black screen bug might be a duplicate of bug 12626 (https://bugs.freedesktop.org/show_bug.cgi?id=12626). Although the symptoms are a bit different, as with that bug some switching between modes with xrandr can produce a picture on the TV. The original report of X crashing on specific modes when color tiling is enabled is still valid though.
Is this still an issue with xf86-video-ati from git master?
(In reply to comment #10) > Is this still an issue with xf86-video-ati from git master? > I have latest compiled xorg-sever, mesa, xf86-video-ati, drm from git to look at KMS progress. The Xorg.0.log shows that the (interlace mode not supported) - but it worked in before the git update.
Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.
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