I did change xorg.conf for bigger virtual resolution, now the xrandr doesn't
complain about small screen, but I run into different problem.
Almost everything I ask xrandr to do with one output, it does it with both of
them.
Here are some examples and additional information about xrandr:
xrandr -v
Server reports RandR version 1.3
xrandr -q
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2560 x 1024
VGA-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm
x 301mm
1280x1024 60.0*+ 75.0 72.0 60.0*
... some more modes ...
DVI-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm
x 301mm
1280x1024 60.0*+ 75.0 72.0 60.0*
... some more modes ...
xrandr --verbose --output DVI-0 --pos 200x0
screen 0: 1480x1024 432x298 mm 86.99dpi
crtc 0: 1280x1024 60.0 +200+0 "DVI-0" "VGA-0"
* does move BOTH screens right by 200px
xrandr --verbose --output DVI-0 --off
crtc 0: 1280x1024 60.0 +0+0 "VGA-0"
* the single command which actually works only at desired output, and NOT at
both, this one does switch the LCD at right off, and the LCD at left remains ON
Any other variation trying to set VGA-0 and DVI-0 to have correct
mode+position to cover whole virtual screen leads to both LCD show
either left or right portion of virtual screen, but always the same one,
i.e. cloned view.
Final puzzling bit of information for me:
xrandr --verbose -q
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2560 x 1024
VGA-0 connected 1280x1024+0+0 (0x4d) normal (normal left inverted right x axis
y axis) 376mm x 301mm
Identifier: 0x4b
Timestamp: 438515
Subpixel: no subpixels
Clones: DVI-0
CRTC: 0
CRTCs: 0 1
... rest (panning and stuff, transform, EDID_DATA, list of modes) is
very likely not interesting in this case...
DVI-0 connected 1280x1024+0+0 (0x4d) normal (normal left inverted right x axis
y axis) 376mm x 301mm
Identifier: 0x4c
Timestamp: 438515
Subpixel: no subpixels
Clones: VGA-0
CRTC: 0
CRTCs: 0 1
...
* the puzzling bit is "Clones:" line. This doesn't sound right.
After xrandr --output DVI-0 --pos 200x0 the verbose query reveals:
Screen 0: minimum 320 x 200, current 1480 x 1024, maximum 2560 x 1024
VGA-0 connected 1280x1024+200+0 (0x4d) normal (normal left inverted right x
axis y axis) 376mm x 301mm
Identifier: 0x4b
Timestamp: 438515
Subpixel: no subpixels
Clones: DVI-0
CRTC: 0
CRTCs: 0 1
Panning: 0x0+0+0
Tracking: 0x0+0+0
Border: 0/0/0/0
...
DVI-0 connected 1280x1024+200+0 (0x4d) normal (normal left inverted right x
axis y axis) 376mm x 301mm
Identifier: 0x4c
Timestamp: 438515
Subpixel: no subpixels
Clones: VGA-0
CRTC: 0
CRTCs: 0 1
Panning: 0x0+0+0
Tracking: 0x0+0+0
Border: 0/0/0/0
IMHO the driver is forcing both outputs to be clone of each other and requires
either further xorg.conf options (maybe definitions of two devices like in good
old times when everything worked after 5min of configuration trough script), or
it does not support dual head at all (???).
I'm adding my current xorg.conf which was used when testing xrandr.
** Attachment added: "xorg.conf"
http://launchpadlibrarian.net/26123321/xorg.conf
--
Kubuntu 9.04 + Radeon X1300 - No dual monitor option in system settings
(dual-head)
https://bugs.launchpad.net/bugs/367776
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