Multi Display on Manjaro KDE
#1
Has anyone experienced problems connecting an external displays to their PBP in KDE?  Mine just mirrors the desktop and I don't see any options to extend it or change the resolution.  Is there any applications I can install on Manjaro to make configuration of the second (or third) display easy?

Thanks,
Karl
Power Distribution Tech and AV by trade, but I have been using Linux since around 2002.  I like the raspberry pi and pinebook pro, SBCs and the possibilities they open.
#2
I guess it's safe to say that you are using XFCE spin with fbturbo? (fbturbo for this effect / xfce because it's more prominent to keep fbturbo on it compared to KDE spin).

For whatever reason, when using fbturbo the external display setup should prepared in `xorg.conf` . I've managed to find only scant and half-working solutions from Raspberry Pi threads which use fbturbo to little success.

Multi-screen setup should work as usual (or as usual as it can with some resolution weirdness) if go the Panfrost route.

Device: Pinebook Pro 128GB No:246 / MainOS: Manjaro ARM
Godot and Flutter - creating something can be fun with the right tools!
#3
(02-14-2020, 05:48 PM)PakoSt Wrote: Multi-screen setup should work as usual (or as usual as it can with some resolution weirdness) if go the Panfrost route.

For multi-screen setup, I moved from xfce fbturbo to xfce panfrost. Now, I have working multi-screen, but my kernel does not seem to like it too much. It constantly logs:


Code:
Feb 18 09:44:24 manjaro kernel: Purging 622592 bytes
Feb 18 09:44:24 manjaro kernel: Purging 544768 bytes
Feb 18 09:44:24 manjaro kernel: Purging 524288 bytes
Feb 18 09:44:24 manjaro kernel: Purging 528384 bytes
Feb 18 09:44:24 manjaro kernel: Purging 593920 bytes
Feb 18 09:44:24 manjaro kernel: Purging 651264 bytes
Feb 18 09:44:25 manjaro kernel: Purging 2170880 bytes
Feb 18 09:44:29 manjaro kernel: panfrost_gem_shrinker_scan: 13 callbacks suppressed
Feb 18 09:44:29 manjaro kernel: Purging 6434816 bytes
Feb 18 09:44:29 manjaro kernel: Purging 983040 bytes
Feb 18 09:44:29 manjaro kernel: Purging 3190784 bytes
Feb 18 09:44:29 manjaro kernel: Purging 688128 bytes
Feb 18 09:44:29 manjaro kernel: Purging 2150400 bytes
Feb 18 09:44:30 manjaro kernel: Purging 2097152 bytes
Feb 18 09:44:30 manjaro kernel: Purging 2752512 bytes
Feb 18 09:44:30 manjaro kernel: Purging 561152 bytes
Feb 18 09:44:30 manjaro kernel: Purging 2396160 bytes
Feb 18 09:44:30 manjaro kernel: Purging 610304 bytes
Feb 18 09:46:57 manjaro kernel: panfrost_gem_shrinker_scan: 13 callbacks suppressed
Feb 18 09:46:57 manjaro kernel: Purging 524288 bytes
Feb 18 09:46:57 manjaro kernel: Purging 536576 bytes
#4
I'm just looking to setup an external display with ease. Cloning the desktop is not what I need. I seems like this is not an ideal laptop for presentations, unless you use a cloned screen.
Power Distribution Tech and AV by trade, but I have been using Linux since around 2002.  I like the raspberry pi and pinebook pro, SBCs and the possibilities they open.
#5
I got it to work now, but one of my usb-c dongles is not very reliable. Sometimes it connects, sometimes it doesn't. Can the usb-c video output drive 2 1080p external screens since it supports 4k?

I switched to the mesa-git (panfrost) from fbturbo.

Thanks
Power Distribution Tech and AV by trade, but I have been using Linux since around 2002.  I like the raspberry pi and pinebook pro, SBCs and the possibilities they open.
#6
(02-25-2020, 07:57 AM)binholz Wrote: I got it to work now, but one of my usb-c dongles is not very reliable.  Sometimes it connects, sometimes it doesn't.  Can the usb-c video output drive 2 1080p external screens since it supports 4k?

I switched to the mesa-git (panfrost) from fbturbo.  

Thanks

Cannot drive 2 1080p external screen even supports 4K
#7
you might consider: the 5.6 git branch has some significant dts changes which have improved hdmi handling for me on debian. also not sure if rockchip/dptx.bin is built into the kernel for manjaro.


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