Created attachment 416824 [details]
Description of problem:
When X11 is started while my Dell Latitude D630 is docked, it looks like the laptop screen is also displayed on the external monitor.
This effect disappears when I switch the internal screen off with
xrandr --output LVDS1 --off
This worked correctly with Fedora 12.
Version-Release number of selected component (if applicable):
Install Fedora 13, boot while laptop is docked.
Steps to Reproduce:
Ghost image in left upper corner on external monitor.
Created attachment 416825 [details]
Xorg.0.log with fedora 12
Created attachment 416826 [details]
lspci -vv output
Created attachment 416827 [details]
xrandr output when bug is hit
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.
Please add drm.debug=0x04 to the kernel command line, restart computer, and attach
* your X server config file (/etc/X11/xorg.conf, if available),
* output of the dmesg command, and
* system log (/var/log/messages),
to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
Created attachment 417600 [details]
Created attachment 417601 [details]
output of dmesg after I have logged in
Created attachment 417603 [details]
I forgot that for Fedora 12 I had to create an /etc/X11/xorg.conf to specify the screen dimensions; without it I get a screen with 2960x1050 pixels.
(In reply to comment #0)
> When X11 is started while my Dell Latitude D630 is docked, it looks like the
> laptop screen is also displayed on the external monitor.
> This effect disappears when I switch the internal screen off with
> xrandr --output LVDS1 --off
> This worked correctly with Fedora 12.
I am afraid I don't understand what's the expected behavior here. Xorg should default to dual-head setting (which is apparently not the case here, that *would* be a bug; could I get a photo of how your external monitor looks like, please?). If you want to have only your external monitor, then you probably need to do a little magic with xorg.conf (which you have already). http://udrepper.livejournal.com/20187.html and xorg.conf(5) could help.
Created attachment 418365 [details]
Screenshot of `laptop display also displayed on external monitor'
Ideally, when the lid of my laptop is closed (i.e. single head on my external monitor), it would be switched off and the settings would be adapted to match those of my external monitor. Alternating between versions of fedora / xorg, it looks like the laptop display `shines through' on my external monitor (see attached pgn) until I switch it off with xrandr --output LVDS1 --off, or this works correctly. I haven't seen this problem since early Fedora 12.
(In reply to comment #10)
> Created an attachment (id=418365) [details]
> Screenshot of `laptop display also displayed on external monitor'
OK, this explains a lot. Passing to developers.
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