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Thread: lock X resolution (for DVI-DL Y-adapter)

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right now, 12.10. 13.04.


use dvi dual-link y adapter mirror 2560x1600 display. 1 monitor hp lp3065, other dell 3008wfp. works quite of time.

unfortunately, @ bootup time, 1 of 2 can connected. , every once in while, after computer has slept , re-awakening, not. presumably, video card ([radeon hd 5400/6300 series) querying monitor resolution , gets 2 monitors' information in garbled form.

so, take running resolution , lock it. believe /var/log/xorg.0.log still contains correct log, , getting

code:
[ 21709.366] (ii) fglrx(0): printing ddc gathered modelines:  [ 21709.366] (ii) fglrx(0): modeline "2560x1600"x0.0  268.50  2560 2608 2640 2720  1600 1603 1609 1646 +hsync -vsync (98.7 khz ep)
i contemplating sticking /etc/x11/xorg.conf:

code:
section "serverlayout"  	identifier     "aticonfig layout"  	screen      0  "aticonfig-screen[0]-0" 0 0  endsection    section "module"  endsection    section "monitor"  	identifier   "aticonfig-monitor[0]-0"  	option	    "vendorname" "ati proprietary driver"  	option	    "modelname" "generic autodetecting monitor"  	option	    "dpms" "true"  	modeline    "2560x1600 60.0"  268.50  2560 2608 2640 2720  1600 1603 1609 1646 +hsync -vsync  endsection    section "device"  	identifier  "aticonfig-device[0]-0"  	driver      "fglrx"  	busid       "pci:1:0:0"  endsection    section "screen"  	identifier "aticonfig-screen[0]-0"  	device     "aticonfig-device[0]-0"  	monitor    "aticonfig-monitor[0]-0"  	defaultdepth     24  	subsection "display"  		viewport   0 0  		depth     24  		modes "2560x1600"  	endsubsection  endsection
is right way this? other suggestions?

the following seems work:



## goes /usr/share/x11/xorg.conf.d/10-monitor.conf


section "monitor"
identifier "monitor0"
modeline "2560x1600" 268.00 2560 2608 2640 2720 1600 1603 1609 1646 +hsync +vsync
endsection


section "screen"
identifier "screen0"
device "dvi-i-2"
option "modevalidation" "allownon60hzmodesdfpmodes, noediddfpmaxsizecheck, novertrefreshcheck, nohorizsyncch
eck, nodfpnativeresolutioncheck, nomaxsizecheck, nomaxpclkcheck, allownonedidmodes, noedidmaxpclkcheck"
monitor "monitor0"
defaultdepth 24
subsection "display"
depth 24
modes "2560x1600"
endsubsection
endsection



Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [ubuntu] lock X resolution (for DVI-DL Y-adapter)


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