ultrawide monitor 21:9 lack of resolution 2560x1080
5,042
Solution 1
You may create the new mode resolution using xrandr and gtf.
To get the mode information :
gtf 2560 1080 60
You might get something like :
# 2560x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 230.76 MHz
Modeline "2560x1080_60.00" 230.76 2560 2728 3000 3440 1080 1081 1084 1118 -HSync +Vsync
Then create the new mode using xrandr with the above data :
xrandr --newmode "2560x1080_60" 230.76 2560 2728 3000 3440 1080 1081 1084 1118 -HSync +Vsync
To add the mode to HDMI-0:
xrandr --addmode HDMI-0 2560x1080_60
Finally to apply the new mode :
xrandr --output HDMI-0 --mode 2560x1080_60
Solution 2
Just building up on @harrymc 's answer:
Check your HDMI version (before using gtf) by comparing the release date of your board and those of the HDMI versions, just to discard the possibility of having an old version which does not support such resolution with those refresh rates.
In my case, probably 1.4b, I lost a lot of time messing with outdated drivers and different combinations of modelines, just to get it working with 30Hz (best I could get with my old video card)
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ultrawide monitor 21:9 lack of resolution 2560x1080
Author by
Erii Asari
Updated on September 18, 2022Comments
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Erii Asari over 1 year
I have a pc with dual boot Ubuntu 18.04.3 (gnome 3.28.4) and Windows 10 and an ATI/AMD Radeon HD 6700 Series card. My monitor LG 29WK500-P has a native resolution of 2560x1080. Windows detect it normally and everything works fine but Ubuntu is not found 2560x1080 in the list of resolutions and max resolution which I can set in ubuntu is 1920x1080.
I tried add manually resolution (https://www.leowkahman.com/2019/02/06/ultrawide-monitor-on-linux/) by cvt and xrandr commands.
$ xrandr Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384 DisplayPort-0 disconnected (normal left inverted right x axis y axis) HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 798mm x 334mm 1920x1080 50.00 59.99* 59.94 1680x1050 59.88 1600x900 60.00 1280x1024 75.02 60.02 1280x800 59.91 1152x864 75.00 59.97 1280x720 60.00 50.00 59.94 1024x768 75.03 60.00 832x624 74.55 800x600 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 60.00 59.94I tied with frequencies from 56 till 75 but mostly after set xrandr output screen was black, how ever when tried cvt with values 72,73,74,75 it showed screen similar like on screen
EDIT: As harrymc asked I add what I tried and results (I did it today and yesterday and I had to several times restart pc so part can reoccure):
gtf 2560 1080 50 <- black screen xrandr --newmode "TEST" 188.60 2560 2704 2976 3392 1080 1081 1084 1112 -HSync +Vsync gtf 2560 1080 55 <- black screen xrandr --newmode "TEST" 209.98 2560 2720 2992 3424 1080 1081 1084 1115 -HSync +Vsync xrandr --newmode "TEST2" 209.98 2560 2720 2992 3424 1080 1081 1084 1115 -HSync +Vsync xrandr --addmode HDMI-0 "TEST2" gtf 2560 1080 60 <- black screen xrandr --newmode "TEST3" 230.76 2560 2728 3000 3440 1080 1081 1084 1118 -HSync +Vsync xrandr --addmode HDMI-0 "TEST3" gtf 2560 1080 65 <- black screen xrandr --newmode "TEST4" 251.82 2560 2728 3008 3456 1080 1081 1084 1121 -HSync +Vsync xrandr --addmode HDMI-0 "TEST4" gtf 2560 1080 70 <- black screen xrandr --newmode "TEST5" 273.18 2560 2736 3016 3472 1080 1081 1084 1124 -HSync +Vsync xrandr --addmode HDMI-0 "TEST5" gtf 2560 1080 75 <- black screen xrandr --newmode "TEST6" 295.08 2560 2744 3024 3488 1080 1081 1084 1128 -HSync +Vsync xrandr --addmode HDMI-0 "TEST6" gtf 2560 1080 71 <- similar like on photo xrandr --newmode "TEST7" 277.33 2560 2736 3016 3472 1080 1081 1084 1125 -HSync +Vsync xrandr --addmode HDMI-0 "TEST7" gtf 2560 1080 69 <- similar like on photo xrandr --newmode "TEST8" 269.27 2560 2736 3016 3472 1080 1081 1084 1124 -HSync +Vsync xrandr --addmode HDMI-0 "TEST8" gtf 2560 1080 80 <- black screen xrandr --newmode "TEST9" 315.59 2560 2744 3024 3488 1080 1081 1084 1131 -HSync +Vsync xrandr --addmode HDMI-0 "TEST9" gtf 2560 1080 66 <- black screen xrandr --newmode "TEST" 255.92 2560 2728 3008 3456 1080 1081 1084 1122 -HSync +Vsync xrandr --addmode HDMI-0 "TEST" gtf 2560 1080 67 <- black screen xrandr --newmode "TEST2" xrandr --newmode "TEST2" 259.80 2560 2728 3008 3456 1080 1081 1084 1122 -HSync +Vsync xrandr --addmode HDMI-0 "TEST2" gtf 2560 1080 68 <- black screen xrandr --newmode "TEST3" 263.91 2560 2728 3008 3456 1080 1081 1084 1123 -HSync +Vsync xrandr --addmode HDMI-0 "TEST3" cvt 2560 1080 55 <- black screen xrandr --newmode "2560x1080_55.00" 209.25 2560 2720 2984 3408 1080 1083 1093 1117 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_55.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr --output HDMI-0 --mode 2560x1080_55.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr cvt 2560 1080 56 <- black screen xrandr --newmode "2560x1080_56.00" 213.25 2560 2720 2984 3408 1080 1083 1093 1118 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_56.00 xrandr --output HDMI-0 --mode 2560x1080_56.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 57 <- black screen xrandr --newmode "2560x1080_57.00" 218.00 2560 2720 2992 3424 1080 1083 1093 1119 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_57.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 58 <- black screen xrandr --addmode HDMI-0 2560x1080_58.00 xrandr --output HDMI-0 --mode 2560x1080_58.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 59 <- black screen xrandr --newmode "2560x1080_59.00" 226.00 2560 2720 2992 3424 1080 1083 1093 1120 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_59.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr --output HDMI-0 --mode 2560x1080_59.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 60 <- black screen xrandr --newmode "2560x1080_60.00" 230.00 2560 2720 2992 3424 1080 1083 1093 1120 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_60.00 xrandr --output HDMI-0 --mode 2560x1080_60.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 61 <- black screen xrandr --newmode "2560x1080_61.00" 235.00 2560 2728 3000 3440 1080 1083 1093 1121 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_61.00 xrandr --output HDMI-0 --mode 2560x1080_61.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 62 <- black screen xrandr --newmode "2560x1080_62.00" 239.00 2560 2728 3000 3440 1080 1083 1093 1122 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_62.00 xrandr --output HDMI-0 --mode 2560x1080_62.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr cvt 2560 1080 63 <- black screen xrandr --newmode "2560x1080_63.00" 243.00 2560 2728 3000 3440 1080 1083 1093 1122 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_63.00 xrandr --output HDMI-0 --mode 2560x1080_63.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 64 <- black screen xrandr --newmode "2560x1080_64.00" 247.00 2560 2728 3000 3440 1080 1083 1093 1123 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_64.00 xrandr --output HDMI-0 --mode 2560x1080_64.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 65 <- black screen xrandr --addmode HDMI-0 2560x1080_65.00 xrandr --newmode "2560x1080_65.00" 251.00 2560 2728 3000 3440 1080 1083 1093 1124 -hsync +vsync xrandr --output HDMI-0 --mode 2560x1080_65.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 66 <- black screen xrandr --newmode "2560x1080_66.00" 256.25 2560 2736 3008 3456 1080 1083 1093 1124 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_66.00 xrandr --output HDMI-0 --mode 2560x1080_66.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 67 <- black screen xrandr --newmode "2560x1080_67.00" 260.25 2560 2736 3008 3456 1080 1083 1093 1125 -hsync +vsync xrandr --output HDMI-0 --mode 2560x1080_67.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 68 <- black screen xrandr --newmode "2560x1080_68.00" 264.25 2560 2736 3008 3456 1080 1083 1093 1126 -hsync +vsync xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 69 <- black screen xrandr --newmode "2560x1080_69.00" 268.25 2560 2736 3008 3456 1080 1083 1093 1126 -hsync +vsync xrandr --output HDMI-0 --mode 2560x1080_69.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 69.50 <- black screen xrandr --newmode "2560x1080_69.50" 270.25 2560 2736 3008 3456 1080 1083 1093 1127 -hsync +vsync xrandr --output HDMI-0 --mode 2560x1080_69.50 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 70 <- black screen xrandr --output HDMI-0 --mode 2560x1080_70.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 70.50 <- black screen xrandr --newmode "2560x1080_70.50" 274.50 2560 2736 3008 3456 1080 1083 1093 1127 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_70.50 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 71 <- black screen xrandr --addmode HDMI-0 2560x1080_71.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 72 <- similar like on photo xrandr --addmode HDMI-0 2560x1080_72.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 72.10 xrandr --addmode HDMI-0 2560x1080_72.10 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 71.99 xrandr --output HDMI-0 --mode 2560x1080_71.9 xrandr --output HDMI-0 --mode 2560x1080_71.99 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 73 <- similar like on photo xrandr --newmode"2560x1080_73.00" 285.75 2560 2744 3016 3472 1080 1083 1093 1129 -hsync +vsync xrandr --newmode "2560x1080_73.00" 285.75 2560 2744 3016 3472 1080 1083 1093 1129 -hsync +vsync xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 74 <- similar like on photo xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 75 <- black screen xrandr --newmode "2560x1080_75.00" 294.00 2560 2744 3016 3472 1080 1083 1093 1130 -hsync +vsync.00 xrandr --addmode HDMI-0 2560x1080_75.00 xrandr --output HDMI-0 --mode 2560x1080_75.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 71.90 <- similar like on photo xrandr --newmode "2560x1080_71.90" 281.25 2560 2744 3016 3472 1080 1083 1093 1128 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_71.90 xrandr --output HDMI-0 --mode 2560x1080_71.90 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 73.50 <- similar like on photo xrandr --newmode "2560x1080_73.50" 288.00 2560 2744 3016 3472 1080 1083 1093 1129 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_73.50 xrandr --output HDMI-0 --mode 2560x1080_73.50 cvt 2560 1080 <- black screen xrandr --newmode "2560x1080_60.00" 230.00 2560 2720 2992 3424 1080 1083 1093 1120 -hsync +vsync xrandr --output HDMI-0 --mode 2560x1080_60.00 xrandr --newmode "2560x1080_71.00" 276.50 2560 2736 3008 3456 1080 1083 1093 1128 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_71.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr --output HDMI-0 --mode 2560x1080_71.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 72 <- similar like on photo xrandr --newmode "2560x1080_72.00" 281.75 2560 2744 3016 3472 1080 1083 1093 1128 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_72.00 xrandr --output HDMI-0 --mode 2560x1080_72.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 73 <- similar like on photo xrandr --newmode "2560x1080_73.00" 285.75 2560 2744 3016 3472 1080 1083 1093 1129 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_73.00 xrandr --output HDMI-0 --mode 2560x1080_73.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr --output HDMI-0 --mode 2560x1080_72.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr --output HDMI-0 --mode 2560x1080_71.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 74 <- similar like on photo xrandr --newmode "2560x1080_74.00" 290.00 2560 2744 3016 3472 1080 1083 1093 1129 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_74.00 xrandr --output HDMI-0 --mode 2560x1080_74.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 75 <- similar like on photo xrandr --newmode "2560x1080_75.00" 294.00 2560 2744 3016 3472 1080 1083 1093 1130 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_75.00 xrandr --output HDMI-0 --mode 2560x1080_75.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 76 <- black screen xrandr --newmode "2560x1080_76.00" 298.00 2560 2744 3016 3472 1080 1083 1093 1131 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_76.00 cvt 2560 1080 72.90 xrandr --newmode "2560x1080_72.90" 285.50 2560 2744 3016 3472 1080 1083 1093 1129 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_72.90 xrandr --output HDMI-0 --mode 2560x1080_72.90 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 72.80 xrandr --newmode "2560x1080_72.80" 285.00 2560 2744 3016 3472 1080 1083 1093 1129 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_72.80 xrandr --output HDMI-0 --mode 2560x1080_72.80 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr gtf 2560 1080 60 <- black screen xrandr --newmode "2560x1080_60.00" 230.76 2560 2728 3000 3440 1080 1081 1084 1118 -HSync +Vsync xrandr --addmode HDMI-0 2560x1080_60.00 xrandr --output HDMI-0 --mode xrandr --output HDMI-0 --mode xrandr --output HDMI-0 --mode 2560x1080_60.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* xrandr cvt 2560 1080 50 <- black screen xrandr --newmode "2560x1080_50.00" 188.75 2560 2712 2976 3392 1080 1083 1093 1114 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_50.00 xrandr --output HDMI-0 --mode 2560x1080_50.00 xrandr --output HDMI-0 --mode 1920x1080 --rate 59.99* cvt 2560 1080 51 <- black screen xrandr --newmode "2560x1080_51.00" 192.75 2560 2712 2976 3392 1080 1083 1093 1115 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_51.00 cvt 2560 1080 52 <- black screen xrandr --newmode "2560x1080_52.00" 196.50 2560 2712 2976 3392 1080 1083 1093 1115 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_52.00 cvt 2560 1080 53 <- black screen xrandr --newmode "2560x1080_53.00" 201.25 2560 2720 2984 3408 1080 1083 1093 1116 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_53.00 cvt 2560 1080 53 <- black screen cvt 2560 1080 54 <- black screen xrandr --newmode "2560x1080_54.00" 205.25 2560 2720 2984 3408 1080 1083 1093 1117 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_54.00 cvt 2560 1080 55 <- black screen xrandr --newmode "2560x1080_55.00" 209.25 2560 2720 2984 3408 1080 1083 1093 1117 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_55.00 cvt 2560 1080 56 <- black screen xrandr --newmode "2560x1080_56.00" 213.25 2560 2720 2984 3408 1080 1083 1093 1118 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_56.00 cvt 2560 1080 57 <- black screen xrandr --newmode "2560x1080_57.00" 218.00 2560 2720 2992 3424 1080 1083 1093 1119 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_57.00 cvt 2560 1080 58 <- black screen xrandr --newmode "2560x1080_58.00" 222.00 2560 2720 2992 3424 1080 1083 1093 1119 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_58.00 cvt 2560 1080 59 <- black screen xrandr --newmode "2560x1080_59.00" 226.00 2560 2720 2992 3424 1080 1083 1093 1120 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_59.00 cvt 2560 1080 60 <- black screen xrandr --newmode "2560x1080_60.00" 230.00 2560 2720 2992 3424 1080 1083 1093 1120 -hsync +vsync xrandr --newmode "2560x1080_60.00_" 230.00 2560 2720 2992 3424 1080 1083 1093 1120 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_60.00_ cvt 2560 1080 61 <- black screen xrandr --newmode "2560x1080_61.00" 235.00 2560 2728 3000 3440 1080 1083 1093 1121 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_61.00 cvt 2560 1080 62 <- black screen xrandr --newmode "2560x1080_62.00" 239.00 2560 2728 3000 3440 1080 1083 1093 1122 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_62.00 cvt 2560 1080 63 <- black screen xrandr --newmode "2560x1080_63.00" 243.00 2560 2728 3000 3440 1080 1083 1093 1122 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_63.00 cvt 2560 1080 64 <- black screen cvt 2560 1080 65 <- black screen cvt 2560 1080 66 <- black screen cvt 2560 1080 67 <- black screen cvt 2560 1080 68 <- black screen cvt 2560 1080 69 <- black screen xrandr --newmode "2560x1080_64.00" 247.00 2560 2728 3000 3440 1080 1083 1093 1123 -hsync +vsync xrandr --newmode "2560x1080_65.00" 251.00 2560 2728 3000 3440 1080 1083 1093 1124 -hsync +vsync xrandr --newmode "2560x1080_66.00" 256.25 2560 2736 3008 3456 1080 1083 1093 1124 -hsync +vsync xrandr --newmode "2560x1080_67.00" 260.25 2560 2736 3008 3456 1080 1083 1093 1125 -hsync +vsync xrandr --newmode "2560x1080_68.00" 264.25 2560 2736 3008 3456 1080 1083 1093 1126 -hsync +vsync xrandr --newmode "2560x1080_69.00" 268.25 2560 2736 3008 3456 1080 1083 1093 1126 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_65.00 xrandr --addmode HDMI-0 2560x1080_66.00 xrandr --addmode HDMI-0 2560x1080_67.00 xrandr --addmode HDMI-0 2560x1080_68.00 xrandr --addmode HDMI-0 2560x1080_69.00 cvt 2560 1080 70 <- black screen xrandr --newmode "2560x1080_70.00" 272.25 2560 2736 3008 3456 1080 1083 1093 1127 -hsync +vsync xrandr --addmode HDMI-0 2560x1080_70.00EDIT 2: I removed my Radeon from PC and connected to integrated graphics card when Ubuntu started then it had resolution 2560x1080 (but then nothing is showed during boot process, just when showed ubuntu login screen). I used command:
xvidtune -showWhich showed used modeline and next I installed radeon card and tried use this modeline. Unfortunately after apply it doesn't works and shows black screen on monitor :(
EDIT 3: I installed also the newest version of Ubuntu 19.10 (I had free space on my disk) but there also no detect resolution 2560x1080.
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Erii Asari over 4 yearsI tried this method and it doesn't works.
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harrymc over 4 yearsCould you add to the post what you tried and its results. -
Erii Asari over 4 yearsI updated post and added commands which I tried and results.
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harrymc over 4 yearsThis might be a driver problem. The latest driver seems to be here. Better verify if that version is later than yours.
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Erii Asari over 4 yearsHow I can check version of drivers? However as I see these drivers aren't for my Radeon HD 6700 card
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Andre Goulart about 2 yearsTHIS! I made a manual binary search and found that my video card can't handle more than 44.20Hz