A incorrect resolution 1368x768 in 19.5 inch display

[ginousi]

We have a built-in 19.5 inch display in Tiger Lake platform,
install Ubuntu 20.04.2 LTS, in display resolution select list, a 1368x768(16:9) item be showed, but display spec support resolution is 1366x768,

Install Windows 10, resolution can be showed 1366x768 correctly.

Is it an known issue in Ubuntu?
or has method can fix it?


Thanks

https://imgur.com/oWsdFiK

[CelticWarrior]

Not an issue.

[ActionParsnip]

What is the output of:


sudo lshw -C display; lsb_release -a; uname -a; xrandr

[ActionParsnip]

Wait are you quibbling 2 pixels here?

[CelticWarrior]

Wait are you quibbling 2 pixels here?
That seems to be the case indeed.

[ActionParsnip]

That seems to be the case indeed.
Yep, not an issue at all.It's half a millimetre in width. Why post a question for this...at all?

[ginousi]

What is the output of:


sudo lshw -C display; lsb_release -a; uname -a; xrandr



*-display
description: VGA compatible controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
logical name: /dev/fb0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=i915 latency=0 mode=1920x1080 visual=truecolor xres=1920 yres=1080
resources: iomemory:600-5ff iomemory:400-3ff irq:157 memory:6002000000-6002ffffff memory:4000000000-400fffffff ioport:3000(size=64) memory:c0000-dffff memory:4010000000-4016ffffff memory:4020000000-40ffffffff

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
Linux jed-6201103 5.8.0-44-generic #50~20.04.1-Ubuntu SMP Wed Feb 10 21:07:30 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Screen 0: minimum 320 x 200, current 1600 x 900, maximum 16384 x 16384
eDP-1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 408mm x 230mm
1920x1080 60.05 + 60.01 59.97 59.96 59.93
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82*
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)

[Yellow Pasque]

Wait are you quibbling 2 pixels here?

You generally want the resolution to match the native resolution of the screen, so questioning 2 pixels isn't necessarily a bad idea.
However, in this case, 1366x768 isn't the native resolution of the screen, and 1360/1366/1368 x 768 isn't exactly 16:9 like the native 1920x1080. So there's going to be some distortion.