On Mon, Aug 24, 2015 at 07:51:32PM +0200, Sven Joachim wrote:
> On 2015-08-24 19:20 +0200, Haines Brown wrote:
>
> > I raised this question before without success, and here rephrase the
> > question.
> >
> > Normally xrandr reports that VGA-1 is disconnected and DVI-I-1 is
> > connected. However, currently both are connected.
>
> Unless you have actually two monitors connected, that's a kernel bug.
...
> It is possible to disable a certain output via the video=… kernel
> parameter, e.g. video=VGA-1:d. Maybe this helps, but it is also
> possible that you get a black screen.
>
> See http://nouveau.freedesktop.org/wiki/KernelModeSetting/.
Thanks, Sven. Very informative.
I tried video=VGA-1:d, and it worked. I'd like to introduce that into
GRUB2 configuration, but I'm not sure how to do it. In
/etc/grub.d/10_linux, can I modify the line
GRUB_CMDLINE_LINUX="rootflags=subvol=${rootsubvol} \
${GRUB_CMDLINE_LINUX}"
to read
GRUB_CMDLINE_LINUX="rootflags=subvol=${rootsubvol} video=VGA-1:d \
${GRUB_CMDLINE_LINUX}" ?
Or in 40_custom do I just append the simple line: video=VGA-1:d ?
I've already broken GRUB2 once fiddling, and so I'm nervous.
I'll try another kernel when I get a chance.
