Re: Monitor Problem

["Stephen P. Molnar" <s.molnar@sbcglobal.net>]

On 7/6/23 09:30, Dan Ritter wrote:

> Stephen P. Molnar wrote: 
> > comp@AbNormal:~$ inxi -GSaz
> > System:
> >   Kernel: 6.1.0-9-amd64 arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
> >     parameters: BOOT_IMAGE=/boot/vmlinuz-6.1.0-9-amd64
> >     root=UUID=e9c597fe-afe5-48b1-bf3f-791c4781f0b8 ro quiet
> >   Desktop: Xfce v: 4.18.1 tk: Gtk v: 3.24.36 info: xfce4-panel wm: xfwm
> >     v: 4.18.0 vt: 7 dm: LightDM v: 1.26.0 Distro: Debian GNU/Linux 12 (bookworm)
> > Graphics:
> >   Device-1: AMD Cedar [Radeon HD 5000/6000/7350/8350 Series] vendor: VISIONTEK
> >     driver: radeon v: kernel alternate: amdgpu arch: TeraScale-2 code: Evergreen
> >     process: TSMC 32-40nm built: 2009-15 pcie: gen: 2 speed: 5 GT/s lanes: 16
> >     ports: active: VGA-1 empty: DVI-I-1,HDMI-A-1 bus-ID: 01:00.0
> >     chip-ID: 1002:68f9 class-ID: 0300 temp: 49.0 C
> >   Device-2: Microdia REDRAGON Live Camera driver: snd-usb-audio,uvcvideo
> >     type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-4:2
> >     chip-ID: 0c45:6536 class-ID: 0102 serial: <filter>
> >   Display: x11 server: X.Org v: 1.21.1.7 compositor: xfwm v: 4.18.0 driver:
> >     X: loaded: radeon unloaded: fbdev,modesetting,vesa dri: r600 gpu: radeon
> >     display-ID: :0.0 screens: 1
> >   Screen-1: 0 s-res: 1024x768 s-dpi: 96 s-size: 270x203mm (10.63x7.99")
> >     s-diag: 338mm (13.3")
> >   Monitor-1: VGA-1 mapped: VGA-0 res: 1024x768 hz: 60 size: N/A modes:
> >     max: 1024x768 min: 640x480
> >   API: OpenGL v: 4.5 Mesa 22.3.6 renderer: AMD CEDAR (DRM 2.50.0 /
> >     6.1.0-9-amd64 LLVM 15.0.6) direct-render: Yes
> > comp@AbNormal:~$
> >
> > The new installation is happy, up and running, but I still have the resolution problem.
> > Pointes towards a solution will be much appreciated.
> >       
>
> A properly working Radeon driver suggests that the only issue is
> a problem getting the EDID mode information from the monitor.
>
> Options:
>
> - Force the mode
> - Swap from VGA to some other cable (HDMI, DVI) depending on
>   what the monitor has.
> - Write a custom modeline
>
> If you have an appropriate cable handy, that will be fastest and
> easiest.
>
> -dsr-
>
>     
Thanks for the reply.

I changed the cable and get the same results.

Then I googled 'linux force vga monitor mode'. This resulted in:

1. Open a Terminal by CTRL + ALT + T
2. Type xrandr and ENTER
3. Note the display name usually VGA-1 or HDMI-1 or DP-1
4. Type cvt 1920 1080 (to get the --newmode args for the next step) and ENTER
5. Type sudo xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync and ENTER

However, I am rather hesitant to try this.

Is there a possibility that I might destroy something?

    --
Stephen P. Molnar, Ph.D.
https://insilicochemistry.net
(614)312-7528 (c)
Skype:  smolnar1