[PLUG] Samsung 3440x1440 monitor not found issue.

[Ben Koenig]

That error message you got in the GUI sounds really strange. I've never seen that before and I tend to mess around with most of the mainstream DEs.

Since xrandr is fine you might want to install something simple like fluxbox to see if it gets the resolution right. Also an easy way to isolate any issues caused by your DE.

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-------- Original Message --------
On Jul 26, 2021, 9:03 AM, Chuck Hast wrote:

> Folks,
> I bought one of those wide monitors at Costco the other day, I
> wanted more space on a given screen, but there appear to be
> two issues, when I start up the machine or log into it I will get
> window with a long list of resolutions and something to the
> effect that that screen resolution was not found. But if I do
> an Xrandr I get the following:
> ----------------------------------------Beginning of text ----------------
> kp4djt at kp4djt64:~$ sudo xrandr
> [sudo] password for kp4djt:
> Screen 0: minimum 320 x 200, current 3440 x 1440, maximum 8192 x 8192
> VGA-1 disconnected (normal left inverted right x axis y axis)
> HDMI-1 disconnected (normal left inverted right x axis y axis)
> DP-1 connected primary 3440x1440+0+0 (normal left inverted right x axis y
> axis) 797mm x 333mm
> 2560x1440 59.95
> 2560x1080 60.00 59.94
> 1920x1080 60.00 50.00 59.94
> 1680x1050 59.95
> 1600x900 60.00
> 1280x1024 75.02 60.02
> 1440x900 59.89
> 1280x800 59.81
> 1152x864 75.00
> 1280x720 60.00 50.00 59.94
> 1024x768 75.03 70.07 60.00
> 832x624 74.55
> 800x600 72.19 75.00 60.32 56.25
> 720x576 50.00
> 720x480 60.00 59.94
> 640x480 75.00 72.81 66.67 60.00 59.94
> 720x400 70.08
> HDMI-2 disconnected (normal left inverted right x axis y axis)
> DP-2 disconnected (normal left inverted right x axis y axis)
> 3440x1440 (0x48) 319.750MHz +HSync -VSync
> h: width 3440 start 3488 end 3520 total 3600 skew 0 clock
> 88.82KHz
> v: height 1440 start 1443 end 1453 total 1481 clock
> 59.97Hz
> -------------------------End of Text ------------------------------------
>
> The other problem is if the machine has blanked out the
> monitor or has locked the screen, if you do the usual stuff
> (move mouse, hit key, etc..) it will not wake up, the fix is
> to power cycle it.
>
> I think if I fix the first problem the 2nd one will go away with
> it. I replaced an older (bought while living in Kalama, WA)
> Samsung 1920x1080 monitor which worked perfectly, it was
> just getting old (dim and replacing those ittybitty fluorescent
> tubes ain't fun anymore).
>
> It appears that the system is seeing the monitor in the correct
> resolution according to Xrandr, but why do I get those screens
> saying it cannot find the correct resolution.
>
> What is irritating is as soon as you move anything on the machine
> the screen disappears. I have looked in the logs to see if I can
> find the data there but no joy...
>
> I may have to use a camera to capture that screen.
> --
>
> Chuck Hast -- KP4DJT --
> I can do all things through Christ which strengtheneth me.
> Ph 4:13 KJV
> Todo lo puedo en Cristo que me fortalece.
> Fil 4:13 RVR1960