Comment # 9 on bug 1193457 from Felix Miata

(In reply to Stefan Dirsch from comment #8)
> Maybe you can try to reposition it to 1920,0 ...

3600-1920=1680, the width of the middle of the three screens. :)

My 2560x1080 screen refuses to power up, so I tried to reproduce the issue with
3 other screens, and it just doesn't happen with them. Notice the upcoming
3.3.13 release of inxi provides more -Ga information than previous versions:

# xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x43; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 3; associated providers: 1; name: modesetting
    output DVI-I-1
    output HDMI-1
    output VGA-1
Provider 1: id: 0xee; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 2; associated providers: 1; name: modesetting
    output DVI-I-1-2
    output DVI-I-1-3
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
VGA-1 connected 1680x1050+1920+0 (normal left inverted right x axis y axis)
474mm x 296mm
Screen 0: minimum 320 x 200, current 5200 x 1200, maximum 16384 x 16384
DVI-I-1-2 connected 1600x900+3600+0 (normal left inverted right x axis y axis)
443mm x 249mm
DVI-I-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y
axis) 519mm x 324mm
   1920x1200     59.95*+
   1680x1050     59.97*+  74.89    59.95    59.88  
   1600x900      59.98*+  59.95    59.82  
# inxi -Sy
System:
  Host: gb970 Kernel: 5.15.12-1-default x86_64 bits: 64
    Desktop: KDE Plasma 5.24.0 Distro: openSUSE Tumbleweed 20220210
# pinxi -GIayz
Graphics:
  Device-1: NVIDIA GF108 [GeForce GT 630] vendor: Gigabyte driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 16 ports:
    active: DVI-I-1,VGA-1 empty: HDMI-A-1 bus-ID: 01:00.0 chip-ID: 10de:0f00
    class-ID: 0300
  Device-2: NVIDIA G84 [GeForce 8600 GT] vendor: XFX Pine driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 4 link-max: lanes: 16 ports:
    active: DVI-I-2 empty: DVI-I-3 bus-ID: 05:00.0 chip-ID: 10de:0402
    class-ID: 0300
  Display: x11 server: X.Org v: 1.21.1.3 compositor: kwin_x11 driver:
    loaded: modesetting unloaded: fbdev,vesa alternate: nouveau,nv,nvidia
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 5200x1200 s-dpi: 120 s-size: 1100x254mm (43.3x10.0")
    s-diag: 1129mm (44.4")
  Monitor-1: DVI-I-1 pos: primary,left model: EA243WM built: 2011
    res: 1920x1200 hz: 60 dpi: 94 gamma: 2.2 size: 519x324mm (20.4x12.8")
modes:
    max: 1920x1200 min: 640x480
  Monitor-2: DVI-I-1-2 mapped: DVI-I-2 pos: right model: DELL P2012H
    built: 2012 res: 1600x900 hz: 60 dpi: 92 gamma: 2.2
    size: 443x249mm (17.4x9.8") modes: max: 1600x900 min: 720x400
  Monitor-3: VGA-1 pos: center model: L2251x Wide built: 2011 res: 1680x1050
    hz: 60 dpi: 90 gamma: 2.2 size: 474x296mm (18.7x11.7") modes: max:
1680x1050
    min: 720x400
  OpenGL: renderer: NVC1 v: 4.3 Mesa 21.3.5 direct render: Yes
Info:...Shell: Bash v: 5.1.16 running-in: konsole pinxi: 3.3.12-26
#
# xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x43; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 3; associated providers: 1; name: modesetting
    output DVI-I-1
    output HDMI-1
    output VGA-1
Provider 1: id: 0xee; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 2; associated providers: 1; name: modesetting
    output DVI-I-1-2
    output DVI-I-1-3
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
VGA-1 connected 1680x1050+1920+0 (normal left inverted right x axis y axis)
474mm x 296mm
Screen 0: minimum 320 x 200, current 5520 x 1200, maximum 16384 x 16384
DVI-I-1-2 connected 1920x1080+3600+0 (normal left inverted right x axis y axis)
160mm x 90mm
DVI-I-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y
axis) 519mm x 324mm
   1920x1200     59.95*+
   1920x1080     60.00*+  59.96    59.94    59.93    30.00    24.00    29.97   
23.98  
   1680x1050     59.97*+  74.89    59.95    59.88  
# inxi -Sy
System:
  Host: gb970 Kernel: 5.15.12-1-default x86_64 bits: 64
    Desktop: KDE Plasma 5.24.0 Distro: openSUSE Tumbleweed 20220210
# pinxi -GIayz
Graphics:
  Device-1: NVIDIA GF108 [GeForce GT 630] vendor: Gigabyte driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 16 ports:
    active: DVI-I-1,VGA-1 empty: HDMI-A-1 bus-ID: 01:00.0 chip-ID: 10de:0f00
    class-ID: 0300
  Device-2: NVIDIA G84 [GeForce 8600 GT] vendor: XFX Pine driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 4 link-max: lanes: 16 ports:
    active: DVI-I-2 empty: DVI-I-3 bus-ID: 05:00.0 chip-ID: 10de:0402
    class-ID: 0300
  Display: x11 server: X.Org v: 1.21.1.3 compositor: kwin_x11 driver:
    loaded: modesetting unloaded: fbdev,vesa alternate: nouveau,nv,nvidia
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 5520x1200 s-dpi: 120 s-size: 1168x254mm (46.0x10.0")
    s-diag: 1195mm (47.1")
  Monitor-1: DVI-I-1 pos: primary,left model: EA243WM built: 2011
    res: 1920x1200 hz: 60 dpi: 94 gamma: 2.2 size: 519x324mm (20.4x12.8")
modes:
    max: 1920x1200 min: 640x480
  Monitor-2: DVI-I-1-2 mapped: DVI-I-2 pos: right model: SAMSUNG built: 2009
    res: 1920x1080 hz: 60 dpi: 305 gamma: 2.2 size: 160x90mm (6.3x3.5") modes:
    max: 1920x1080 min: 720x400
  Monitor-3: VGA-1 pos: center model: L2251x Wide built: 2011 res: 1680x1050
    hz: 60 dpi: 90 gamma: 2.2 size: 474x296mm (18.7x11.7") modes: max:
1680x1050
    min: 720x400
  OpenGL: renderer: NVC1 v: 4.3 Mesa 21.3.5 direct render: Yes
Info:...Shell: Bash v: 5.1.16 running-in: konsole pinxi: 3.3.12-26
#
# xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x43; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 3; associated providers: 1; name: modesetting
    output DVI-I-1
    output HDMI-1
    output VGA-1
Provider 1: id: 0xee; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 2; associated providers: 1; name: modesetting
    output DVI-I-1-2
    output DVI-I-1-3
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
VGA-1 connected 1680x1050+1920+0 (normal left inverted right x axis y axis)
474mm x 296mm
Screen 0: minimum 320 x 200, current 6160 x 1440, maximum 16384 x 16384
DVI-I-1-2 connected 2560x1440+3600+0 (normal left inverted right x axis y axis)
598mm x 336mm
DVI-I-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y
axis) 519mm x 324mm
   2560x1440     59.95*+
   1920x1200     59.95*+
   1680x1050     59.97*+  74.89    59.95    59.88  
# inxi -Sy
System:
  Host: gb970 Kernel: 5.15.12-1-default x86_64 bits: 64
    Desktop: KDE Plasma 5.24.0 Distro: openSUSE Tumbleweed 20220210
# pinxi -GIayz
Graphics:
  Device-1: NVIDIA GF108 [GeForce GT 630] vendor: Gigabyte driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 16 ports:
    active: DVI-I-1,VGA-1 empty: HDMI-A-1 bus-ID: 01:00.0 chip-ID: 10de:0f00
    class-ID: 0300
  Device-2: NVIDIA G84 [GeForce 8600 GT] vendor: XFX Pine driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 4 link-max: lanes: 16 ports:
    active: DVI-I-2 empty: DVI-I-3 bus-ID: 05:00.0 chip-ID: 10de:0402
    class-ID: 0300
  Display: x11 server: X.Org v: 1.21.1.3 compositor: kwin_x11 driver:
    loaded: modesetting unloaded: fbdev,vesa alternate: nouveau,nv,nvidia
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 6160x1440 s-dpi: 120 s-size: 1303x304mm (51.3x12.0")
    s-diag: 1338mm (52.7")
  Monitor-1: DVI-I-1 pos: primary,left model: EA243WM built: 2011
    res: 1920x1200 hz: 60 dpi: 94 gamma: 2.2 size: 519x324mm (20.4x12.8")
modes:
    max: 1920x1200 min: 640x480
  Monitor-2: DVI-I-1-2 mapped: DVI-I-2 pos: right model: K272HUL built: 2018
    res: 2560x1440 hz: 60 dpi: 109 gamma: 2.2 size: 598x336mm (23.5x13.2")
    modes: max: 2560x1440 min: 720x400
  Monitor-3: VGA-1 pos: center model: L2251x Wide built: 2011 res: 1680x1050
    hz: 60 dpi: 90 gamma: 2.2 size: 474x296mm (18.7x11.7") modes: max:
1680x1050
    min: 720x400
  OpenGL: renderer: NVC1 v: 4.3 Mesa 21.3.5 direct render: Yes
Info:...Shell: Bash v: 5.1.16 running-in: konsole pinxi: 3.3.12-26
#
# xrandr --output DVI-I-1 --primary --below DVI-I-1-3 --output VGA-1 --right-of
DVI-I-1-3 --output DVI-I-1-2 --right-of DVI-I-1
# xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x43; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 3; associated providers: 1; name: modesetting
    output DVI-I-1
    output HDMI-1
    output VGA-1
Provider 1: id: 0xee; cap: 0xf (Source Output, Sink Output, Source Offload,
Sink Offload); crtcs: 2; outputs: 2; associated providers: 1; name: modesetting
    output DVI-I-1-2
    output DVI-I-1-3
# xrandr | egrep 'onnect|creen|\*' | grep -v disconn | sort -r
VGA-1 connected 1680x1050+1920+0 (normal left inverted right x axis y axis)
474mm x 296mm
Screen 0: minimum 320 x 200, current 4480 x 2520, maximum 16384 x 16384
DVI-I-1-3 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
160mm x 90mm
DVI-I-1-2 connected 2560x1440+1920+1080 (normal left inverted right x axis y
axis) 598mm x 336mm
DVI-I-1 connected primary 1920x1200+0+1080 (normal left inverted right x axis y
axis) 519mm x 324mm
   2560x1440     59.95*+
   1920x1200     59.95*+
   1920x1080     60.00*+  59.96    59.94    59.93    30.00    24.00    29.97   
23.98  
   1680x1050     59.97*+  74.89    59.95    59.88  
# inxi -Sy
System:
  Host: gb970 Kernel: 5.15.12-1-default x86_64 bits: 64
    Desktop: KDE Plasma 5.24.0 Distro: openSUSE Tumbleweed 20220210
# pinxi -GIayz
Graphics:
  Device-1: NVIDIA GF108 [GeForce GT 630] vendor: Gigabyte driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 16 ports:
    active: DVI-I-1,VGA-1 empty: HDMI-A-1 bus-ID: 01:00.0 chip-ID: 10de:0f00
    class-ID: 0300
  Device-2: NVIDIA G84 [GeForce 8600 GT] vendor: XFX Pine driver: nouveau
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 4 link-max: lanes: 16 ports:
    active: DVI-I-2,DVI-I-3 empty: none bus-ID: 05:00.0 chip-ID: 10de:0402
    class-ID: 0300
  Display: x11 server: X.Org v: 1.21.1.3 compositor: kwin_x11 driver:
    loaded: modesetting unloaded: fbdev,vesa alternate: nouveau,nv,nvidia
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 4480x2520 s-dpi: 120 s-size: 945x532mm (37.2x20.9")
    s-diag: 1084mm (42.7")
  Monitor-1: DVI-I-1 pos: primary,bottom-l model: EA243WM built: 2011
    res: 1920x1200 hz: 60 dpi: 94 gamma: 2.2 size: 519x324mm (20.4x12.8")
modes:
    max: 1920x1200 min: 640x480
  Monitor-2: DVI-I-1-2 mapped: DVI-I-2 pos: bottom-r model: K272HUL
    built: 2018 res: 2560x1440 hz: 60 dpi: 109 gamma: 2.2
    size: 598x336mm (23.5x13.2") modes: max: 2560x1440 min: 720x400
  Monitor-3: DVI-I-1-3 mapped: DVI-I-3 pos: primary,top-left model: SAMSUNG
    built: 2009 res: 1920x1080 hz: 60 dpi: 305 gamma: 2.2
    size: 160x90mm (6.3x3.5") modes: max: 1920x1080 min: 720x400
  Monitor-4: VGA-1 pos: top-right model: L2251x Wide built: 2011
    res: 1680x1050 hz: 60 dpi: 90 gamma: 2.2 size: 474x296mm (18.7x11.7")
modes:
    max: 1680x1050 min: 720x400
  OpenGL: renderer: NVC1 v: 4.3 Mesa 21.3.5 direct render: Yes
Info:...Shell: Bash v: 5.1.16 running-in: konsole pinxi: 3.3.12-26
#

Apparently the currently useless 2560x1080 Dell monitor wasn't coping with the
DVI connection, so there's nothing wrong, even using 4 displays. If only I had
plugged in a 4th or tried a different 3rd, comment #0 wouldn't have happened.
:p