On 4/12/22 4:53 AM, Roger Heflin wrote:
Do you know what the max supported resolution is of both monitors?If both are capable of the same resolution then it may simply be that the one with the current wrong resolution needs to be changed in the display setup to match. I think the nvidia-settings tool can also adjust the monitor resolutions (if you are using the nvidia driver). When connecting different monitors they seem to often pick the wrong (not max) resolution, and I have had to go into display settings and change it.The sub-optimal solution would be to change the higher res monitor to the same resolution of the lower resolution monitor (ie pick a common supported resolution for both monitors) but that would lose quite a bit of pixels.
According to Dell, the max resolutions are: - left monitor, Dell Professional P2412H, 1920 x 1080. - right monitor, Dell Ultrasharp 2711b, 2560 x 1440.I've attached screen-captures of the "NVIDIA X Server Settings" for the 2 monitors. Because of cabling, right and left are reversed in the GUI. Question: What is Resolution = "Auto" actually selecting?
By the way, I almost always use gnome. The xrandr article that Geoge referred to seemed to assume Plasma.
Bill.
On Mon, Apr 11, 2022 at 9:19 PM home user <mattisonw@xxxxxxxxxxx <mailto:mattisonw@xxxxxxxxxxx>> wrote:On 4/9/22 7:37 PM, George N. White III wrote: > On Sat, 9 Apr 2022 at 22:00, home user <mattisonw@xxxxxxxxxxx <mailto:mattisonw@xxxxxxxxxxx> > <mailto:mattisonw@xxxxxxxxxxx <mailto:mattisonw@xxxxxxxxxxx>>> wrote: > > On 4/9/22 6:28 PM, George N. White III wrote: > > > > Maybe this will help: > > How to get a dual monitor setup with mixed DPI working on Xorg – The > > Midnight Sun (lguruprasad.in <http://lguruprasad.in> <http://lguruprasad.in <http://lguruprasad.in>>) > >> <https://www.lguruprasad.in/blog/2020/01/13/how-to-get-a-dual-monitor-setup-with-mixed-dpi-working-on-xorg/ <https://www.lguruprasad.in/blog/2020/01/13/how-to-get-a-dual-monitor-setup-with-mixed-dpi-working-on-xorg/> > <https://www.lguruprasad.in/blog/2020/01/13/how-to-get-a-dual-monitor-setup-with-mixed-dpi-working-on-xorg/ <https://www.lguruprasad.in/blog/2020/01/13/how-to-get-a-dual-monitor-setup-with-mixed-dpi-working-on-xorg/>>>> > Where does the xrandr command go? Neither the web page you reference > nor the xrandr man page gives any clue. > > > STARTX <https://www.x.org/releases/X11R7.6/doc/man/man1/startx.1.xhtml <https://www.x.org/releases/X11R7.6/doc/man/man1/startx.1.xhtml>> Some parts of the xrandr I was able to figure out quickly. Other parts, I spent a huge amount of time on, and I've got educated guesses, but I'm still not sure. left monitor: 1920 x 1080. right monitor: 2560 x 1440. What I think the xrandr command should be: ----- xrandr --fbmm 5920x3330 --output DP-0 --pos 3360x0 --mode 2560x1440 --scale 1x1 --primary --output HDMI-0 --pos 0x0 --mode 1920x1080 --scale 1.75x1.75 ----- But I still don't get where to put the command. It seems to me that this should be taken care of during boot-up, before the log-in screen is displayed. I don't see how startx helps. On my work station, I don't see any of the files listed by the startx web page you referenced: ----- bash.15[~]: ls -a X* x* .X* .x* ls: cannot access 'X*': No such file or directory ls: cannot access 'x*': No such file or directory ls: cannot access '.X*': No such file or directory .xfce4-session.verbose-log .xscreensaver .xournal: . .. recent-files bash.16[~]: su - Password: -bash.1[~]: cd /usr/lib/ -bash.2[lib]: ls -a X* x* .X* .x* ls: cannot access 'X*': No such file or directory ls: cannot access 'x*': No such file or directory ls: cannot access '.X*': No such file or directory ls: cannot access '.x*': No such file or directory -bash.3[lib]: ----- Also, Tim's Friday night (Colorado time) post suggests none of this is needed. How do I proceed? > > -- > George N. White III
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