Arch Linux

kmeng

Member

Registered: 2009-12-18

Posts: 8

Dual screen problem: the right screen cannot display the mouse pointer

I have the problem for about one month after one upgrade.  The mouse in left screen is OK. But the right screen cannot display the mouse pointer. In the right screen, the mouse pointer just cannot be displayed. It still can click or right click to open the file or show the menu.
My system: Arch32 + Gnome.
xorg.conf:
Section "Screen"
    Identifier    "Default Screen"
    SubSection "Display"
        Virtual    2560 1024
    EndSubSection
EndSection

Anyone who has the same problem or knows how to fix it?
Thanks.

jdarnold

Member

From: Medford MA USA

Registered: 2009-12-15

Posts: 485

Website

Re: Dual screen problem: the right screen cannot display the mouse pointer

what video card do you have? And what driver are you using for it?

kmeng

Member

Registered: 2009-12-18

Posts: 8

Re: Dual screen problem: the right screen cannot display the mouse pointer

xf86-video-ati

VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550 Series]

Himmi.Jimmy

Member

Registered: 2009-12-19

Posts: 9

Re: Dual screen problem: the right screen cannot display the mouse pointer

Hi @all,

I've got the same Problem @Arch64.
Solved it by adding radeon.modeset=0 at /boot/grub/menu.lst file.

# (0) Arch Linux
title  Arch Linux
root   (hd0,0)
kernel /vmlinuz26 root=/dev/disk/by-uuid/17572c25-2b41-4e9d-8abc-268e51be48bb ro radeon.modeset=0
initrd /kernel26.img

lspci |grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc RV570 [Radeon X1950 Pro] (rev 9a)

/etc/X11/xorg.conf

Section "Monitor"
        Identifier   "MonitorLinks"
        Option      "DPMS" "true"
EndSection

Section "Monitor"
        Identifier   "MonitorRechts"
        Option      "DPMS" "true"
        Option      "RightOf" "MonitorLinks"
EndSection
Section "Device"
        Identifier  "RV570"
        Option  "monitor-DVI-0" "MonitorRechts"
        Option  "monitor-DVI-1" "MonitorLinks"
        BusID       "PCI:1:0:0"
        Driver  "radeon"
#       Driver  "ati"
#       Option  "DRI" "1"
#       Option  "AccelMethod"  "EXA"
#        Option "AccelMethod" "XAA" # not EXA fuer Opera Meldung
#        Option  "RDROutputOrder" "DVI-0"
EndSection

Section "Screen"
        Identifier "RV570"
        Device     "RV570"
        Monitor    "MonitorLinks"
        DefaultDepth    24
        SubSection "Display"
                Viewport   0 0
                Modes   "1280x1024"
                Virtual   2560 1024
                Depth     24
        EndSubSection
EndSection

yaourt -Qs xf86-video-ati
extra/xf86-video-ati 6.12.99.git20091014-1 (xorg-video-drivers)
     X.org ati video driver

Don't know really why, but a solution with KMS enabled would be fine.

kmeng

Member

Registered: 2009-12-18

Posts: 8

Re: Dual screen problem: the right screen cannot display the mouse pointer

Thanks Himmi.Jimmy.  Fixed it by following your xorg.conf. I didn't change the menu.lst file.