screen resolution stuck at 1024x768

English Hardware
1

I have just installed Tumbleweed onto a Lenovo M92p Thinkcentre.
Install went well (and it is the only OS installed).
However, I cannot set the screen resolution higher than 1024x768
The screen is an AOC with a recommended resolution of 1680x1050
It is temporarily connected via a vga cable until the displayport > hdmi cable I have ordered arrives.
However, I believe with the vga cable it should still be capable of the recommended resolution

Here is was I get for *inxi -Gxx

inxi -Gxx
Graphics:
  Device-1: Intel Xeon E3-1200 v2/3rd Gen Core processor Graphics vendor: Lenovo 
  driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:0152 
  Display: x11 server: X.org 1.20.9 compositor: kwin_x11 driver: modesetting 
  unloaded: fbdev,vesa alternate: intel resolution: <xdpyinfo missing> 
  OpenGL: renderer: Mesa DRI Intel HD Graphics 2500 (IVB GT1) v: 4.2 Mesa 20.1.7 
  compat-v: 3.0 direct render: Yes

please let me know if any other info is required.

2

See if the Xorg approach outlined here is of help
https://askubuntu.com/questions/776435/i-cant-get-1920x1080-with-intel-linux-graphic-driver

FWIW, I use a ‘minimal’ xorg.conf to set a custom display resolution for a Vbox Linux (openSUSE) guest OS.

3

Thanks, but I’m not having much luck
following the instructions there I get

cvt 1680 1050 60
# 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz
Modeline "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vs
ync

but then at the next step I get this

sudo xrandr --newmode "1680x1050_60.00"  146.25  1680 1784 1960 2240  1
050 1053 1059 1089 -hsync +vsync
[sudo] password for root:  
Can't open display

If I just create an xorg.conf and put the info in there I am not able to load plasma on reboot

4

problem is solved (kind of) . . .
Displayport cable arrived today so have plugged that in instead.
Reboot and have a very nice looking 1920X1080@60hz display - no intervention required on my part at all.

5

You don’t run xrandr as root!

If I just create an xorg.conf and put the info in there I am not able to load plasma on reboot

No, no, no… you seem to have confused yourself with the two methods described. The second (system-wide) method uses Xorg configuration and the xrandr command was not required at all!

6

Yes, the manual intervention was only required for the problematic (or no) EDID with the use of the analogue VGA cable. In general, no configuration is required. The DP cable is the way to go. :wink:

7

oh, I didn’t know. I merely copy / pasted the command from the link you provided and substituted the resolution I wanted

No, no, no… you seem to have confused yourself with the two methods described. The second (system-wide) method uses Xorg configuration and the xrandr command was not required at all!

I didn’t try and combine these methods. After the trouble with xrandr I rebooted and followed the instructions from the link of what to add to xorg.conf - but after a further reboot couldn’t get into plasma.

But it’s all irrelevant now that I have the DP cable in place :slight_smile:

Thanks again for your help

8

All good. It wasn’t clear what “info” you added to xorg.conf.

In any case good to read all sorted now.