Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

centoventicinque · 2022-08-20 08:29:41

Hi everyone, i've been using Arch since the last decade and half and this is the first time i actually have a problem i can't solve myself or with a solution in wiki/forum .

My Arch Installation is running fine on a ryzen 5 3600G, 32 Gb RAM, nvme 256GB and 4tb motherboard managed raid ( 1 ) storage, my graphic card is an zotac nvidia GTX 1660, my previous monitor was a 24" LG , the actual one is and acer K272 and this one have a strange issue.

Using this monitor i can see the UEFI logo and eventually go in to setup , i can also see systemd-boot and the console message while booting up the machine, once the display manager comes up the screen goes black and say " input not supported" .

But the machine is working fine , CTRL+ALT+Fx bring me to command line ( but the screen will remain black whit the " input not supported" text floating around) and i can reboot the machine.

If i log in blindly everything is fine, my setup is working behind the black monitor, gnome is running.

if i disable GDM i can also log in in command line which is shown fine until i try to run GDM or other display manager , even the simple startx ( i've no xorg.conf file ) command make the monitor goes in to " input not supported" , xorg logs doesn't help, there are no error nor significative warnings.

someone may help me ?

seth · 2022-08-20 11:26:15

xorg logs doesn't help

Well, let's see?
(Don't grep it - the problem isn't necessarily marked/caused by an actual error)

centoventicinque · 2022-08-21 14:48:38

here it is

https://pastebin.com/GmRDHhZ8

this comes out after running plain startx command as normal user, no xorg.conf file and also no xinitrc file, using the old LG monitor X start with twm

seth · 2022-08-21 15:21:59

[    60.858] (--) NVIDIA(GPU-0): Acer KA272 (DFP-4): connected
[    60.858] (--) NVIDIA(GPU-0): Acer KA272 (DFP-4): Internal TMDS
[    60.858] (--) NVIDIA(GPU-0): Acer KA272 (DFP-4): 600.0 MHz maximum pixel clock
[    60.896] (==) NVIDIA(0): 
[    60.896] (==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select"
[    60.896] (==) NVIDIA(0):     will be used as the requested mode.
[    60.896] (==) NVIDIA(0): 
[    60.898] (II) NVIDIA(0): Validated MetaModes:
[    60.898] (II) NVIDIA(0):     "DFP-4:nvidia-auto-select"
[    60.898] (II) NVIDIA(0): Virtual screen size determined to be 1920 x 1080
[    60.938] (--) NVIDIA(0): DPI set to (81, 80); computed from "UseEdidDpi" X config
[    60.938] (--) NVIDIA(0):     option

Since you don't have ibt=off in the kernel parameters, do you use nvidia-open?

using the old LG monitor X start with twm

But afaiu everything w/ that output is ok, so the Xorg log is pretty useless?

centoventicinque · 2022-08-21 19:20:37

that's why I'm struggling, everything looks fine.

I'm using nvidia proprietary driver and this is the first issue I've in 10+ years .

seth · 2022-08-21 19:28:42

seth wrote:

But afaiu everything w/ that output is ok, so the Xorg log is pretty useless?

We'll need an xorg log from a run w/ the problematic monitor (Acer K272)

centoventicinque · 2022-08-22 14:30:59

is the one i posted before

seth · 2022-08-22 14:38:45

Sorry, I didn't correlate your comment w/ the actual log.

There's no obvious problem w/ the output.
Do you get a signal when you switch to a different VT (ctrl+alt+f1,2,3,…)?
Otherwise, can you ssh into the system?

Output of

xrandr -display :0 -q

(while the X11 server is running w/ the Acer monitor w/o producing a signal)

centoventicinque · 2022-08-24 07:20:00

seth wrote:

There's no obvious problem w/ the output.
Do you get a signal when you switch to a different VT (ctrl+alt+f1,2,3,…)?

if wasn't me i wouldn't trust the user who write this but :

if i start the OS directly to command line everything works fine, i have a fully working shell! i can use ctrl+alt+F1,2,3,4... to change VT with no issue if i DON'T start any display manager/x server , once a display manager ( doesn't matter which one ) or a X session is started the screen goes in to " unsupported input ", no way to get it back to work , i've to blindly reboot the PC.

ssh works fine.

Just for be super clear this is not a fresh install from a new user who forgot to set up something, this is a working setup, any other monitor work fine!

Last edited by centoventicinque (2022-08-24 07:22:01)

seth · 2022-08-24 07:22:54

seth wrote:

Output of
xrandr -display :0 -q
(while the X11 server is running w/ the Acer monitor w/o producing a signal)

Arch Linux

#1 2022-08-20 08:29:41

Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#2 2022-08-20 11:26:15

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#3 2022-08-21 14:48:38

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#4 2022-08-21 15:21:59

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#5 2022-08-21 19:20:37

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#6 2022-08-21 19:28:42

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#7 2022-08-22 14:30:59

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#8 2022-08-22 14:38:45

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#9 2022-08-24 07:20:00

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

#10 2022-08-24 07:22:54

Re: Acer K272 + Nvidia GTX 1660 won't display Desktop Manager

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