I'd like to try dual monitors with a Pi5 running Bookworm and Wayland.
The system is up to date as of this writing.
The system was initially configured with a Dell HDMI 1920 by 1080
monitor as the primary, so I added a Dell DVI 1600 by 900 as the
secondary using a DVI-to_HDMI adapter on the cable..
After reboot the system came up with the 1600 by 900 as primary,
and the Screen Configuration utility doesn't notice the original
primary monitor, which was powered on during boot.
Switching the monitors between hdmi ports makes no difference,
the origninal primary monitor is ignored and the 1600 by 900
monitor is primary.
If I run xrandr, it reports:
Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
HDMI-1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 443mm x 249mm
1600x900 59.98*+
1280x1024 75.02 60.02
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
HDMI-2 disconnected (normal left inverted right x axis y axis)
The "maximum 8192 x 8192" seems absurd.
HDMI-2 is NOT disconnected, it's connected and powered up.
Is there a fix for this problem? I do have a couple other
monitors (natively DVI with HDMI adapters) but none are
exact matches. For now I'll try switching away from Wayland
to see if that helps, but would rather not, long term.
bp@www.zefox.net wrote:
I'd like to try dual monitors with a Pi5 running Bookworm and Wayland.
The system is up to date as of this writing.
The system was initially configured with a Dell HDMI 1920 by 1080
monitor as the primary, so I added a Dell DVI 1600 by 900 as the
secondary using a DVI-to_HDMI adapter on the cable..
After reboot the system came up with the 1600 by 900 as primary,
and the Screen Configuration utility doesn't notice the original
primary monitor, which was powered on during boot.
Switching the monitors between hdmi ports makes no difference,
the origninal primary monitor is ignored and the 1600 by 900
monitor is primary.
If I run xrandr, it reports:
Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
HDMI-1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 443mm x 249mm
1600x900 59.98*+
1280x1024 75.02 60.02
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
HDMI-2 disconnected (normal left inverted right x axis y axis)
The "maximum 8192 x 8192" seems absurd.
HDMI-2 is NOT disconnected, it's connected and powered up.
Is there a fix for this problem? I do have a couple other
monitors (natively DVI with HDMI adapters) but none are
exact matches. For now I'll try switching away from Wayland
to see if that helps, but would rather not, long term.
I just tried each of the three options for a GUI; X11,
Wayland and a third which appears to be Wayland with a
different window manager.
All fail to detect the dual monitor setup, using instead the
older 1600 by 900 display and being completely oblivious to
the second monitor connected and powered on.
I do notice that during boot, the status LED on the unrecognized
monitor briefly goes from amber (asleep) to blue (awake), suggesting
that the monitor does detect some activity on the HDMI port it's
connected to. Unfortunately it goes back to sleep in about a second.
Ok, now I'm totally confused. I switched the monitors back into their original configuration, which didn't work when first tried repeatedly,
and now it works just as expected. Both monitors display the boot output, when the GUI is started I get the normal display on HDMI0 and the default wallpaper on HDMI1.
Ok, now I'm totally confused. I switched the monitors back into their
original configuration, which didn't work when first tried repeatedly,
and now it works just as expected. Both monitors display the boot output,
when the GUI is started I get the normal display on HDMI0 and the default
wallpaper on HDMI1.
In my experience over 50 years, at least 85% of computer hardware problems are bad connections - cured by reseating boards or replugging cables.
Ok, now I'm totally confused. I switched the monitors back into their
original configuration, which didn't work when first tried repeatedly,
and now it works just as expected. Both monitors display the boot output,
when the GUI is started I get the normal display on HDMI0 and the default
wallpaper on HDMI1.
In my experience over 50 years, at least 85% of computer hardware problems are bad connections - cured by reseating boards or replugging cables.
Paul Hardy <p.g.hardy@btinternet.com> wrote:
Ok, now I'm totally confused. I switched the monitors back into their
original configuration, which didn't work when first tried repeatedly,
and now it works just as expected. Both monitors display the boot output, >>> when the GUI is started I get the normal display on HDMI0 and the default >>> wallpaper on HDMI1.
In my experience over 50 years, at least 85% of computer hardware problems >> are bad connections - cured by reseating boards or replugging cables.
Maybe that's it. One of the micro-HDMI ports is a noticeably tighter fit
than the other. However, the problem didn't seem tied to that port. It's certainly true that modern, tiny connectors are much more frail than older, larger styles. Micro-HDMI seems to be asking for trouble. Same for USB-C.
Thanks for writing,
bob prohaska
That's why my PIs go in boxes with extension cables to full size sockets
The Natural Philosopher <tnp@invalid.invalid> wrote:
That's why my PIs go in boxes with extension cables to full size sockets
What sort of "boxes? Regular commercial enclosures, or something more special.
My PIs are in normal cases, clipped to a shelf and connected by normal cables.
Thanks for writing,
bob prohaska
Paul Hardy <p.g.hardy@btinternet.com> wrote:
In my experience over 50 years, at least 85% of computer hardware problems >> are bad connections - cured by reseating boards or replugging cables.
Maybe that's it. One of the micro-HDMI ports is a noticeably tighter fit
than the other. However, the problem didn't seem tied to that port. It's certainly true that modern, tiny connectors are much more frail than older, larger styles. Micro-HDMI seems to be asking for trouble. Same for USB-C
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