Pi 4 dual Monitor

[Rabie]

Hi Juanito,

Do you have the latest v4l-dvb-5.10.16-piCore-v7 extension?

i didn't had this one but i installed it and no difference

Are you sure Xorg is running with 3d hardware acceleration?

yes i am sure
here

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tc@box:~$ glxinfo |grep Acc
    Accelerated: yes

now im trying since days to get this work out, there must be an solution 

[Juanito]

Is the h264 hardware decoder present - /dev/video10?

edit: if it is present, maybe you need to increase gpu memory in config.txt

[Rabie]

Hi Juanito,

Is the h264 hardware decoder present - /dev/video10?

edit: if it is present, maybe you need to increase gpu memory in config.txt

yes this is what i found

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ls /dev/video1
video10  video11  video12  video13  video14  video15  video16
do you mean i have to increase the arm here ? How much ?

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#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800
edit: i tried with arm_freq=1000, didn't help

[Juanito]

Try gpu_mem=128 with Xorg-3d and, if that doesn’t work, 256.

[Rabie]

Hi Juanito,

Try gpu_mem=128 with Xorg-3d and, if that doesn’t work, 256.

unfortunately both options did not work, gpu_mem=128 or 256 didn't exist in config.txt but i placed it there my self

it didn't help not even a little bit

[patrikg]

Did you place it on the right line ?
You have to place it under [ALL] section or under [PI4] section.

[Juanito]

After reboot, you can check using the rpi-vc extension:

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$ sudo vcgencmd get_mem gpu
gpu=256M


[Rabie]

Did you place it on the right line ?
You have to place it under [ALL] section or under [PI4] section.

yes i did

After reboot, you can check using the rpi-vc extension:
Code: [Select]
$ sudo vcgencmd get_mem gpu
gpu=256M

and now i checked for it and tried it again but there is no difference

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tc@box:~$ sudo vcgencmd get_mem gpu
gpu=256M


[Juanito]

Have you tried the freerdp switch /gdi:hw?

[Rabie]

Hi Juanito,

Have you tried the freerdp switch /gdi:hw?

yes like i said before this ist what i untill now have tried

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gdi:hw
/network:[modem|broadband|broadband-low|broadband-high|wan|lan|auto]   (Best one was the /network:auto)
+gfx-thin-client
+gfx-small-cache
+gfx-progressive
/gfx-h264:AVC444
/gfx:AVC444
/gfx:AVC420

in config.txt:

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gpu_mem=256
dtoverlay=vc4-kms-v3d-pi4
max_framebuffers=2
arm_freq=1000
config_hdmi_boost=4

and like i said before, i don't think that the Hardware or freerdp are causing the problem, because when i switch to fbturbo and run freerdp without any performance parameter like "gdi:hw", it's just running like a rocket

so i think it's just the Graphic driver who's cousing the slow freerdp performance

[Juanito]

On RPi4, h264 hw acceleration is available via the ffmpeg h264_v4l2m2m decoder - I'd guess that freerdp is not using it. Alternatively, the v3d graphics driver on the RPi4 might be too slow.

Searching the internet reveals several comments stating that freerdp is faster on RPi3 than RPi4, which would tend to support the above.

[Rabie]

On RPi4, h264 hw acceleration is available via the ffmpeg h264_v4l2m2m decoder - I'd guess that freerdp is not using it. Alternatively, the v3d graphics driver on the RPi4 might be too slow.

Searching the internet reveals several comments stating that freerdp is faster on RPi3 than RPi4, which would tend to support the above.

do you know if there is a way to use dual Monitor on RPi3 ?

[Rabie]

Hi Juanito,

It's perhaps a long shot, but maybe wayland/weston might work better than x11?

A few hints here: http://forum.tinycorelinux.net/index.php/topic,23269.msg150229.html

so i decided to try wayland as an compromise.

could you please tell me how to configure the Dual Monitors in the extended Mode on weston ?

Thank you

[Juanito]

Did you check the linux man page for weston.ini?

(It's my understanding that weston will run two monitors in extended mode by default)

[Rabie]

Did you check the linux man page for weston.ini?

(It's my understanding that weston will run two monitors in extended mode by default)

yes you are right, i made a mistake 

so i wanted to try wlfreerdp to see if it is faster than Xorg, but wlfreerdp is starting just on one Monitor and just on the one where i start the following from Terminal

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wlfreerdp /sec:rdp /multimon:force +multitransport -mouse-motion +auto-reconnect /cert-ignore /bpp:15 /kbd:0x00000407 /d:domain /v:server:3389 /f
How to get wlfreerdp on both Monitors ?