I’m having a hell of a time trying to get my ASUS 27" AUS VG27VQ screen to use 2560x1440 on a notebook:
TUXEDO Book XA15 - Gen 10
Full-HD (1920 x 1080) IPS-Panel 144Hz non-glare
NVIDIA GeForce RTX 2070 Refresh 8GB
AMD Ryzen 7 3700X (8x 3.6-4.4GHz Octa-Core, 16 Threads, 36 MB Cache, 65W TDP)
I have seen a similar question asked here 3 years ago with NO answers but I try anyway.
I follow the procedure as I have read them online:
$ xrandr
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-2 connected (normal left inverted right x axis y axis)
1920x1080 144.01 + 72.01
DP-3 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 598mm x 336mm
1920x1080 119.98*+ 165.01 144.00 99.93 84.90 60.00 59.94 50.00
1680x1050 59.95
...
...
$ cvt 2560 1440 120
# 2560x1440 119.95 Hz (CVT) hsync: 185.33 kHz; pclk: 661.25 MHz
Modeline “2560x1440_120.00” 661.25 2560 2784 3064 3568 1440 1443 1448 1545 -hsync +vsync
$ xrandr --newmode “2560x1440_120.00” 661.25 2560 2784 3064 3568 1440 1443 1448 1545 -hsync +vsync
$ xrandr …
2560x1440_120.00 (0x34f) 661.250MHz -HSync +VSync
h: width 2560 start 2784 end 3064 total 3568 skew 0 clock 185.33KHz
v: height 1440 start 1443 end 1448 total 1545 clock 119.95Hz
But when I try to add mode I get the error:
xrandr --addmode DP-3 2560x1440_120.00
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 39
Current serial number in output stream: 40
I have tried on both HDMI and Display Port with the same result.
I placed a call to Tuxedo but have not received a working solution.
The same screen WORKS in 2560x1440 using similar instructions with another computer using same version of Ubuntu Budgie.
NOTE: I can use nvidea-settings to select this mode 2560x1440 and it works fine for a while but then reverts back to 1920 automatically ?
I’ve tried creating xorg.conf and modifying .config/monitor.xml wihtout any success.
Anyone have a idea ?