#1 2021-07-22 10:38:15

xpl012

New Member

Registered: 2021-07-22

Posts: 1

Modify the screen resolution after installing

Acer Aspire 5313
GMA X3100
Bunsenlabs has only one option after installation, 1024×768. Using the xrandr command has an error:

xrandr: Failed to get size of gamma for output default

xrandr
xrandr: Failed to get size of gamma for output default
Screen 0:minimum 800 x 600, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0xx
  1024x768     0.00*
  800x600      0.00

inxi -G
Graphics:
  Device-1: Intel Mobile GM965/GL960 Integrated Graphics driver: N/A
  Display: server: X.Org 1.20.4 driver: vesa unloaded: fbdev,modesetting
  resolution: 1024x768~N/A
  OpenGL: renderer: llvmpipe (LLVM 7.0 128 bits) v: 3.3 Mesa 18.3.6

ps.solved, delete "nomodeset" in grub, and add "video=SVIDEO-1:d".

Last edited by xpl012 (2021-07-22 18:45:13)

sletteriello

New Member

From: vt, us

Registered: 2024-03-13

Posts: 2

Re: Modify the screen resolution after installing

I'm having a similar problem with an ASUSbr1100ck that refuses to run X in 1366x768 on BL beryllium, it's native resolution, which the live installer automatically runs in.  Instead it refuses to do anything but 800x600 which is squashed looking and, well  very low res.  It's absolute pain to do CAD drawings on.

xrandr says:

sean@asusmc:~$ xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 800 x 600, current 800 x 600, maximum 800 x 600
default connected 800x600+0+0 0mm x 0mm
   800x600       75.00*

When they said you delete "nomodeset" in grub, and add "video=SVIDEO-1:d" -- what file/script do you actually do that in?
I poked around and didn't see anything like that in /boot/grub...

PackRat

jgmenu user Numero Uno

Registered: 2015-10-02

Posts: 2,611

Re: Modify the screen resolution after installing

\
When they said you delete "nomodeset" in grub, and add "video=SVIDEO-1:d" -- what file/script do you actually do that in?
I poked around and didn't see anything like that in /boot/grub...

Usually that is the /etc/default/grub file.

This line runs the commands -

GRUB_CMDLINE_LINUX_DEFAULT="  "

remove the nomodeset if it exists and add video=SVIDEO-1:d

File needs to be edited as root; when you're finished you need to run:

sudo update-grub

Then reboot for the changes to take effect.

---

You must unlearn what you have learned.
    -- yoda

sletteriello

New Member

From: vt, us

Registered: 2024-03-13

Posts: 2

Re: Modify the screen resolution after installing

Thanks for the direction on editing grub.  Did that, but didn't fix the problem, oh well.  I guess the other person's issue wasn't just like mine.  arandr, which most posts mention as being the way to set your x resolution, does this-and the error is that size of gamma problem again:

(arandr:1118): Gdk-CRITICAL **: 11:56:57.510: gdk_atom_intern: assertion 'atom_name != NULL' failed

(arandr:1118): Gdk-CRITICAL **: 11:56:57.510: gdk_atom_intern: assertion 'atom_name != NULL' failed
/usr/lib/python3/dist-packages/screenlayout/xrandr.py:78: UserWarning: XRandR wrote to stderr, but did not report an error (Message was: b'xrandr: Failed to get size of gamma for output default\n')
  warnings.warn(

Hard for me to understand why the installer live instance would get it right -- it's not like it has some special driver or something.
inxi gives me this info, more 800x600 madness.  Should it say the Intel driver (yeah, it's an intel chipset..)... is N/A? 

sean@asusmc:~$ inxi -G
Graphics:
  Device-1: Intel driver: N/A 
  Device-2: IMC Networks USB2.0 HD UVC WebCam type: USB driver: uvcvideo 
  Display: x11 server: X.Org 1.20.11 driver: loaded: vesa 
  unloaded: fbdev,modesetting resolution: 800x600~75Hz 
  OpenGL: renderer: llvmpipe (LLVM 11.0.1 128 bits) v: 4.5 Mesa 20.3.5