Bug 1013148 - workspace switching broken with multiple video cards
workspace switching broken with multiple video cards
Status: ASSIGNED
Product: Fedora EPEL
Classification: Fedora
Component: xfwm4 (Show other bugs)
el6
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Kevin Fenzi
Fedora Extras Quality Assurance
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Reported: 2013-09-27 18:14 EDT by Dimitri Maziuk
Modified: 2013-09-28 18:40 EDT (History)
1 user (show)

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Description Dimitri Maziuk 2013-09-27 18:14:51 EDT
Description of problem:

I've one monitor connected to display port of the on-board intel video and 2 monitors on the dual-dvi radeon card. Workspaces work per-card: when I switch to another workspace, the DP monitor switches and the other two don't -- when I have the DP one set as the primary. 

Not sure which xfce component is responsible fro this, exactly.

Version-Release number of selected component (if applicable):

xfwm4-4.8.3-1.el6.x86_64

Additional info:

Current (as of 2013-09-27) versions of everything, centos 6 x86_64 w/ ELRepo kernel-lt (3.0.97); dell optiplex 790.
Comment 1 Kevin Fenzi 2013-09-28 12:42:06 EDT
Yeah, multi monitor support in 4.8 isn't so great. ;( 

I'm not sure I follow the exact issue here... you want all monitors to switch workspaces at the same time? Or they do and you don't want them to?
Comment 2 Dimitri Maziuk 2013-09-28 18:40:10 EDT
(In reply to Kevin Fenzi from comment #1)
> Yeah, multi monitor support in 4.8 isn't so great. ;( 

Right, I'm not sure what the priority for this should be, exactly: wishlist for people with too many monitors?
 
> I'm not sure I follow the exact issue here... you want all monitors to
> switch workspaces at the same time? Or they do and you don't want them to?

I want all monitors to switch workspaces at the same time. What they do is either the monitor on intel-DP sitches workspaces, or the the ones on radeon-dvi switch, but not all three. 

So it looks like -- I'm not sure what's a good way to put it -- "switchable workspace" spans one video card. If you look at the snippet from xorg.conf below, the desktop spans all 3 screens, but switching workspaces works on  Screen0/Monitor0 only. Screen1/Monitor and Screen2/Monitor2 are not switching. 

I can change ServerLayout and options to make S1/M1 and S2/M2 switch, but then S0/M0 is not switching.

Section "Screen"
    Identifier "Screen0"
    Device     "IntelOnBoard"
    Monitor    "Monitor0
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection

Section "Screen"
    Identifier "Screen1"
    Device     "ATICard"
    Monitor    "Monitor1"
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection

Section "Screen"
    Identifier "Screen2"
    Device     "ATICard"
    Monitor    "Monitor2"
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection

Section "ServerLayout"
    Identifier     "Default layout"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    Screen      2  "Screen2" RightOf "Screen1"
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

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