How to get information about monitor in use? (Solved)

[LazY Puppy]

Hi.

I'm using my OS on several different machines with different types of monitors.

To get some special functions to work, I need to setup a variable (by a script) dependent on the monitor in use.

So how can I get information about the monitor in use?

Is it possible to get such information already at boot up (before the graphical X desktop appears on the screen)?

Thanks in advance.

RSH

[trapster]

The info you seek may be buried in /var/log/Xorg.0.log

[vovchik]

@ Trapster,

You're right. Mine shows the following:

Code: Select all

cat /var/log/Xorg.0.log | grep "Monitor name"
[    45.652] (II) RADEON(0): Monitor name: HP LE2201w

Thanks and kind regards,
vovchik

[LazY Puppy]

@ Trapster,

You're right. Mine shows the following:

Code: Select all

cat /var/log/Xorg.0.log | grep "Monitor name"
[    45.652] (II) RADEON(0): Monitor name: HP LE2201w

Thanks and kind regards,
vovchik

Thanks to all.

I think this is going to be helpful.

[jamesbond]

What info do you need? Monitor name? Resolution? Both you can get before Xorg starts, but resolution can *change* when you launch Xorg.

[LazY Puppy]

What info do you need? Monitor name? Resolution? Both you can get before Xorg starts, but resolution can *change* when you launch Xorg.

I need exactly information about where the monitor is connected to the graphics card (VGA-0 or VGA-1 or LVDS-0 (HDMI-0) or LVDS-1 (HDMI-1) etc.pp).

[drunkjedi]

Hey Lazy, would xrandr do?

I don't know much about booting process or when xrandr will work but xrandr do tell how a monitor is connected and it's preferred resolution.

[LazY Puppy]

Yes, xrandr seems to return necessary info.

Though, examining /var/log/Xorg.0.log will do what I need, as it seems to be updated repeatedly during the session.

Again thanks to all.

[LazY Puppy]

Currently all the machines in use don't use the HDMI connection for the monitor, so I could limit this just to VGA only (nvidia and ati graphics cards).

So here's what I'm doing in my script to get the necessary monitor properties to change wallpaper dependent on the current desktop (viewport).

Code: Select all

# Get Data from current used Distro Configuration File
. /etc/DISTRO_SPECS
. /etc/"$DISTRO_FILE_PREFIX"_"$DISTRO_VERSION".cfg
CFGFILE="`realpath /etc/"$DISTRO_FILE_PREFIX"_"$DISTRO_VERSION".cfg`"
INFOFILE=/var/log/Xorg.0.log
MONCONNECT=""
if (grep -i 'Output VGA-1 connected' $INFOFILE >/dev/null) then
	echo "VGA-1"; MONCONNECT="VGA-1";
	elif (grep -i 'Output VGA-0 connected' $INFOFILE >/dev/null) then
	echo "VGA-0"; MONCONNECT="VGA-0";
fi
if [ "$MONCONNECT" != "" ]; then
	NEWMYXFCEWPPROPERTY="/backdrop/screen0/monitor$MONCONNECT/workspace0/last-image"
	sed -i 's|'"$MYXFCEWPPROPERTY"'|'"$NEWMYXFCEWPPROPERTY"'|' "$CFGFILE"
fi