New arch installation, problems with dual monitors

tldr: nvidia setting are not saving when when I leave a session.
yesterday I wiped my computer and went from ubuntu to arch on my desktop (been using arch on laptop for a while). I'm having problems getting my dual monitor settings to save. I configure the settings via nvidia server settings and it works fine but when I go to reboot or log out it goes back down to just one screen and I have reset up nvidia.
gdm has never seen both monitors its always just the single screen.
software
nvidia drivers 280.13
xfce4 v4.8.0
gdm 3.0.4-2
kernal 3.0-arch
my system is up to date with a yaourt -Syu
Sorry if this has been answered but my googlefoo was not strong today.

GDM *should* use a xorg.conf if it exists.... I also noticed that Arch keeps a xorg.conf.d folder, which I'm not sure the nvidia-settings app knows how to handle.
Also, make sure you are running the nvidia-settings app with root privileges, as you'll need those to write a xorg.conf in /etc/X11.

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Hello Arch community,
I just spent the last 2-3 days installing, downloading, reading this forum and the wiki and configuring my new Arch installation on my Dell Studio 1557 and I now have a nice fast little gnome environment that fits my needs
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PS: Please excuse any grammatical mistakes, my native language is german
Last edited by zwoggel (2010-05-10 10:30:46)

manzdagratiano wrote:
onemyndseye wrote:
I was affected by this problem and wrote the follow bit of code as a workaround:
/usr/bin/dropboxd
#!/bin/sh
# Copyright 2008 Evenflow, Inc., 2010 Dropbox
# Environment script for the dropbox executable.
start_dropbox() {
PAR=$(dirname $(readlink -f $0))
OLD_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
LD_LIBRARY_PATH=$PAR:$LD_LIBRARY_PATH
kill -9 $(pidof dropbox) >/dev/null 2>&1
exec $PAR/dropbox $@ &
do_dropbox() {
start_dropbox >/dev/null 2>&1
while [ 1 ]; do
sleep 5
ERROR="$(net_test)"
if [ -n "$ERROR" ]; then
LAST_ERROR=1
else
if [ -n "$LAST_ERROR" ]; then
# Connection seems to be up but
# last cycle was down
LAST_ERROR=""
start_dropbox >/dev/null 2>&1
fi
fi
done
net_test() {
TMP1="$(ifconfig |grep "inet addr:" |grep -v "127.0.0.1")"
[ -z "$TMP1" ] && echo "error"
do_dropbox
Hope this helps someone
Woohoo!!! Many many thanks! I was plagued by this issue, and this worked superbly for me.... I just modified the script a little for error checking like you mentioned - with a `ps ax' to check for whether dropbox is running before trying to kill it. I love the fact that the script would restart dropbox in the event of a connection loss/reconnection. The modified script is as follows:
#!/bin/sh
# Copyright 2008 Evenflow, Inc., 2010 Dropbox
# Environment script for the dropbox executable.
start_dropbox() {
PAR=$(dirname $(readlink -f $0))
OLD_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
LD_LIBRARY_PATH=$PAR:$LD_LIBRARY_PATH
TMP1=`ps ax|grep dropbox|grep -v grep`
if [ -n "$TMP1" ]; then
kill -9 $(pidof dropbox) >/dev/null 2>&1
fi
exec $PAR/dropbox $@ &
do_dropbox() {
start_dropbox >/dev/null 2>&1
while [ 1 ]; do
sleep 5
ERROR="$(net_test)"
if [ -n "$ERROR" ]; then
LAST_ERROR=1
else
if [ -n "$LAST_ERROR" ]; then
# Connection seems to be up but last cycle was down
LAST_ERROR=""
start_dropbox >/dev/null 2>&1
fi
fi
done
net_test() {
TMP1="$(ifconfig |grep "inet addr:" |grep -v "127.0.0.1")"
[ -z "$TMP1" ] && echo "error"
do_dropbox
Many thanks also to varg04444 for suggesting his very simple script - I did not go with that only because it would not restart dropbox in the event of a reconnection.
Since ifconfig is deprecated now, I made a small change in the script to use ip command instead:
#copyright 2008 Evenflow, Inc., 2010 Dropbox
# Environment script for the dropbox executable.
start_dropbox() {
PAR=$(dirname $(readlink -f $0))
OLD_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
LD_LIBRARY_PATH=$PAR:$LD_LIBRARY_PATH
TMP1=`ps ax|grep dropbox|grep -v grep`
if [ -n "$TMP1" ]; then
kill -9 $(pidof dropbox) >/dev/null 2>&1
fi
exec $PAR/dropbox $@ &
do_dropbox() {
start_dropbox >/dev/null 2>&1
while [ 1 ]; do
sleep 5
ERROR="$(net_test)"
if [ -n "$ERROR" ]; then
LAST_ERROR=1
else
if [ -n "$LAST_ERROR" ]; then
# Connection seems to be up but last cycle was down
LAST_ERROR=""
start_dropbox >/dev/null 2>&1
fi
fi
done
net_test() {
TMP1="$(ip addr |grep "inet " |grep -v "127.0.0.1")"
[ -z "$TMP1" ] && echo "error"
do_dropbox

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Problem with two monitors while using Photoshop, windows move from 2nd screen to 1st screen.
I saved a new workspace and it did not help.
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I found the fix, go to System Preferences and open Mission Control and uncheck the box to keep monitors as they were (When switching to an application...........)

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Gnome displays the sad monitor and has the error message "..something has gone wrong..~" and will force me to log out. I've only started to experience this after messing with dual monitor settings in nvidia. The dual setup(twinview) worked but once I rebooted, I couldn't get it going for awhile.
Here's my xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 285.05.09 ([email protected]) Fri Sep 23 19:18:19 PDT 2011
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
#Option "TwinView" "True"
#Option "MetaModes" "nvidia-auto-select, nvidia-auto-select"
SubSection "Display"
Depth 24
EndSubSection
EndSection
I commented out below to get it in again, but it still feels shaky and unstable to log in now. Sometimes I will get the error and after a log out and login, it'll work.
#Option "TwinView" "True"
#Option "MetaModes" "nvidia-auto-select, nvidia-auto-select"
Extra Notes: I have another desktop session with awesome installed(uninstalled now) and could log into that no problem. Awesome was giving me troubles so I uninstalled it. I have 2 gnome desktop sessions, my regular gnome session(the one that crashes), and the other with no window manager(never crashed on startup).
I installed awesome around the same time as configuring the dual monitor setup.
Thanks.

Update.
The crashes are to be expected now. I'm circumventing the whole thing by logging into my other Gnome session without a window manager, logging out and then logging back into my regular Gnome with Metacity.
I've noticed the tty1 sessions(not sure what's it's called) is strange. Apparently my session runs on tty8 but when I try logging in, it'll crash me and tty7 gives me a blank screen with a blinking underscore. The other tty1s work regularly. Not sure if this has anything to do with it.
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[SOLVED] openbox margins with dual monitors

Hi community,
I have stumbled to a nasty problem on my first incursion to dual monitors in openbox.
I'm using xrandr with this command (which works just fine BTW):
xrandr --output LVDS --mode 1280x800 --primary --output VGA-0 --mode 1280x1024_60.00 --gamma 1.0:1.4:0.85 --right-of LVDS
and have set a Virtual screen in xorg.conf of 2560 x 1024 pixels.
But, my laptop monitor only handles 1280x800, while my external LCD monitor has 1280x1024, so there is a virtual area under my laptop screen which i'm not using, but i dont really care about that.
The problem is that when I'm setting screen margins, so that maximized windows will respect the panels in the bottom (tint2), in rc.xml (or by obconf) the margins are applied to the virtual screen and only are practical on the external monitor wich has more pixel height.
I'm really missing some kind of per monitor margin settings in openbox, maybe there is and i haven't found it? It makes me wonder because openbox can maximize windows to a single monitor, even if the whole layout it's treated like a virtual screen, so it has some way of distinguishing between them.
I would appreciate any suggestions, thanks.
Last edited by andreamer (2010-07-26 18:32:15)

TL;DR - I'm not aware of any acceptable solution at the moment.
Basically, what you're having problems with, is the "dead area." It can really be quite a pain in the butt if window managers or other screen aware applications don't anticipate it properly. To my knowledge, Openbox doesn't support margins on a monitor-by-monitor basis. In reality, you shouldn't need to be setting margins anyway. Tint2 should be reporting itself as a taskbar, and Openbox should be respecting that.
I have dead area too, with multiple monitors, and Openbox respects both of the KDE taskbars I have running (one on each monitor). (I use KDE and simply replaced Kwin with Openbox.) This tells me that tint2 should be able to cooperate with Openbox. I remember trying tint2 a while ago, and didn't fine it adequate in a dual monitor environment (it was probably a year ago or so). tint2 would need to be setting the _NET_WM_STRUT_PARTIAL hint, and I'm not sure if it is (or if it's doing it properly). See http://standards.freedesktop.org/wm-spe … #id2507618
Also, I do know that the developer for Openbox recently got a dual monitor setup, and she's been adding additional support for dual monitors a little at a time. Hopefully with 3.5, there will be a lot more support. (Margin support for multiple monitors would be great, because it could be a good utility knife for applications that don't care about multi-monitors setups and don't set the proper hints.)
If you're capable of modifying tint2, my course of action would be to try something that works (like the KDE taskbars) and record the hints being set there. Then compare them with tint2 and try to mirror KDE's setup. (If you're a programming lacking experience with X and related nonsense, I'd be more than willing to offer what guidance I have.)
Also, I developed a panel myself (and got pretty far along) using the PyGTK toolkit... But I can't remember if I solved this problem or not. I'll try to check it out and get back to you. (I got as far as implementing a widget system that includes a task list, system tray, clock, menus... It just isn't polished very well. My original intention was for it to be a more robust PyPanel with dual monitor support.)
Last edited by BurntSushi (2010-07-24 22:46:23)

New arch installation, problems with dual monitors

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