On Sat, 11 Jul 2015 23:41:02 +0100
Peter Flynn <[email protected]> wrote:
> On 07/11/2015 10:49 PM, Toan Pham wrote:
>
> Thank you for these great suggestions...
>
> > when that happens, ssh into the box, and send us the /var/log/Xorg.0.log
> > file.
>
> Appended.
>
> Fortunately, I'm in a location now where I have access to another
> machine on the network, otherwise I'd be down to trying to do ssh with
> my phone over a reverse Ethernet cable :-)
>
> The laptop powered up with a black screen this time. Not good. I pressed
> Enter, on the basis that it would be at the Grub prompt; then after some
> disk-light flashing I typed by whole-disk encryption passphrase; then
> another wait, then my regular password (as I'm the only user); and then
> checked with the network monitor on another machine to get the IP
> address the DNS server had granted. Yay :-)
>
> > also try to run this and see if it comes back.
>
> sudo su - for the remainder...
>
> > chvt 1 && sleep 7 && chvt 7
>
> Nothing.
>
> > if not, try this:
> >
> > xrandr --output DP-1 --primary ## you may have to run xrandr -q to find
> > our available outputs (if not DP-1)
>
> "Can't open display"
>
> Well, reasonable enough if no display exists. I wonder has X lost track
> of the screen.
>
> But xrandr -q says the same thing...I don't know if xrandr can access
> the display of another process like that.
You will need to set the DISPLAY environment variable for xrandr to
know what display to connect to. You can do that with
export DISPLAY=:0.0
You may need authentication also, in that case point the XAUTHORITY
variable at your .Xauthority file - it's most likely in your homedir,
so something like:
export XAUTHORITY="/home/username/.Xauthority"
Petter
--
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"Are you sure?"
"I'm positive."
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