hdmi - Can't select 2560x1440 resolution even though I know it's possible (I have proof!) - Ask Ubuntu
i have new monitor, (the dell u2515h) i'm trying drive @ 2560x1440 resolution (just 30hz) on hdmi using onboard graphics on machine (intel hd4000 found in ivy bridge cpu). exact machine spec here.
i know it's possible because i've had working once yesterday , once today. randomly appeared in available screen resolution options. yesterday worked bit (~10 minutes?) flipped 2048x1152 , option 1440 resolution disappeared. today option appeared , selected 2560x1440 worked fine:
i tried re-booting machine in effort "persist" preference, after rebooting hit error message:
full error message here if interested, basically, looks never tried 30hz.
on right hand side of screenshot can see output xrandr can see option 2560x1440 has disappeared again.
i've tried using xrandr add resolution manually doesn't work:
matt@beast:~$ gtf 2560 1440 30 # 2560x1440 @ 30.00 hz (gtf) hsync: 43.95 khz; pclk: 146.27 mhz modeline "2560x1440_30.00" 146.27 2560 2680 2944 3328 1440 1441 1444 1465 -hsync +vsync matt@beast:~$ xrandr --newmode "2560x1440_30.00" 146.27 2560 2680 2944 3328 1440 1441 1444 1465 -hsync +vsync matt@beast:~$ xrandr --addmode hdmi2 "2560x1440_30.00" matt@beast:~$ xrandr --output hdmi2 --mode "2560x1440_30.00" (screen flicks black moment doesn't change mode).
any ideas can try next?
update
i able edid information (thanks kind author of get-edid):
section "monitor" identifier "dell u2515h" modelname "dell u2515h" vendorname "del" # monitor manufactured week 45 of 2014 # edid version 1.3 # digital display displaysize 550 310 gamma 2.20 option "dpms" "true" horizsync 30-113 vertrefresh 56-86 # maximum pixel clock 300mhz #not giving standard mode: 1680x1050, 60hz #not giving standard mode: 1920x1200, 60hz #not giving standard mode: 1152x864, 75hz #not giving standard mode: 1600x1200, 60hz #not giving standard mode: 1280x1024, 60hz #not giving standard mode: 1200x960, 60hz #extension block found. parsing... revnum: 3 modeline "mode 16" 148.50 1920 2008 2052 2200 1080 1082 1087 1125 +hsync +vsync modeline "mode 0" 241.50 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync modeline "mode 1" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync modeline "mode 2" 74.250 1920 2008 2052 2200 1080 1082 1087 1125 +hsync +vsync interlace modeline "mode 3" 74.250 1280 1390 1420 1650 720 725 730 750 +hsync +vsync modeline "mode 4" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync modeline "mode 5" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync modeline "mode 6" 27.027 1440 1478 1602 1716 480 484 487 525 -hsync -vsync interlace modeline "mode 7" 27.000 1440 1464 1590 1728 576 578 581 625 -hsync -vsync interlace modeline "mode 8" 25.200 640 656 752 800 480 490 492 525 -hsync -vsync modeline "mode 9" 74.250 1920 2448 2492 2640 1080 1082 1089 1125 +hsync +vsync interlace modeline "mode 10" 148.500 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync modeline "mode 11" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync modeline "mode 12" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync modeline "mode 13" 74.250 1920 2558 2602 2750 1080 1084 1089 1125 +hsync +vsync modeline "mode 14" 74.250 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync modeline "mode 15" 74.250 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync modeline "mode 17" 74.25 1920 2008 2052 2200 540 542 547 562 +hsync +vsync interlace modeline "mode 18" 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync modeline "mode 19" 27.00 720 736 798 858 480 489 495 525 -hsync -vsync option "preferredmode" "mode 16" endsection it looks mode want "mode 0" tried set using xrandr (was correct thing do?) doesn't seem work:
matt@beast:~$ xrandr --newmode "2560x1440_47.43" 241.50 2560 2728 3000 3440 1440 1441 1444 1480 -hsync +vsync matt@beast:~$ xrandr --addmode hdmi2 "2560x1440_47.43" matt@beast:~$ xrandr --output hdmi2 --mode "2560x1440_47.43" xrandr: configure crtc 0 failed i can see 2560x1440 option in "screen display" settings error message:
now can try?
another answer posted here earlier correct.
before start let me have no problem on haswell setup cs1794 kvm switch , 2m hdmi cable (asin: b003l1zyym) connected u2515h.
hdmi2 connected 2560x1440+4480+0 (normal left inverted right x axis y axis) 553mm x 311mm 2560x1440 60.0*+ 1920x1080 60.0 + 60.0 50.0 59.9 30.0 25.0 24.0 30.0 24.0 … it's bit different on ivy bridge setup same equipment, can configure 24hz , 30hz modelines gtf:
xrandr --newmode "2560x1440_24.00" 114.37 2560 2648 2912 3264 1440 1441 1444 1460 -hsync +vsync xrandr --addmode hdmi2 "2560x1440_24.00" xrandr --output hdmi2 --mode "2560x1440_24.00" xrandr --newmode "2560x1440_30.00" 146.27 2560 2680 2944 3328 1440 1441 1444 1465 -hsync +vsync xrandr --addmode hdmi2 "2560x1440_30.00" xrandr --output hdmi2 --mode "2560x1440_30.00" and xrandr output looks like:
hdmi2 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 553mm x 311mm 2560x1440 30.0*+ 2048x1152 60.0 1920x1200 60.0 1920x1080 60.0 60.0 50.0 59.9 30.0 25.0 24.0 30.0 24.0 1920x1080i 60.1 50.0 60.0 1600x1200 60.0 1680x1050 59.9 1280x1024 75.0 60.0 1200x960 60.0 1152x864 75.0 1280x720 60.0 50.0 59.9 1024x768 75.1 60.0 800x600 75.0 60.3 720x576 50.0 720x576i 50.1 720x480 60.0 59.9 720x480i 60.1 60.1 640x480 75.0 60.0 59.9 720x400 70.1 2560x1440_30.00 30.0 2560x1440_24.00 24.0 24hz refresh rate low can go , feels terrible, 30hz little bit of improvement. should proper hdmi 1.4 or displayport setup. displaylink adapters worth looking after have published linux drivers usb 3.0 devices.
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