topic wayland 1.9 cannot display multi screen in i.MX Processors

wayland 1.9 cannot display multi screen

wangzhigang — Wed, 24 Feb 2016 08:13:32 GMT

hi everyone,

we want to use yocto(qt5.5+wayland) for our project.our env is:

imx6q

yocto(qt5.5.1+wayland imx-3.14.52-1.1.0_ga)

kernel(3.14)

display(lvds+hdmi+svideo)

we want to get multi display(lvds+hdmi+svideo) in yocto.

1. yocot(qt5.3.2+wayland imx-3.14.28-1.0.0_ga) + kernel(3.10.53)

we success to compile yocto,and we can get the multi display with the follow command:

weston --tty=2 --device=/dev/fb0,/dev/fb2 --use-gal2d=1 & (just use two display)

but the we don't want to use qt5.3 for our project,so we use the latest yocot .

2.yocto(qt5.5.1+wayland imx-3.14.52-1.1.0_ga) + kernel(3.14)

we sure the /dev/fb0 and /dev/fb2 is no problem.

we success to compile the latest yocto,and we can get into the desktop.but we can't get the multi display with the follow command(the display is all blue):

weston --tty=2 --device=/dev/fb0,/dev/fb2 --use-gal2d=1 &

the log is:

root@imx6qsabresd:~# weston --tty=2 --device=/dev/fb0,/dev/fb2 --use-gal2d=1 &

[1] 505

root@imx6qsabresd:~# Date: 2016-01-28 UTC

[17:48:41.778] weston 1.9.0

http://wayland.freedesktop.org

Bug reports to: https://bugs.freedesktop.org/enter_bug.cgi?product=Wayland&component=weston&version=1.9.0

Build: 1.8.93-2-gb05cdb8 configure.ac: bump to version 1.9.0 for the official release (2015-09-21 18:11:26 -0700)

[17:48:41.779] OS: Linux, 3.14.52-gf55f3a4-dirty, #3 SMP PREEMPT Tue Feb 23 12:40:39 CST 2016, armv7l

[17:48:41.779] Starting with no config file.

[17:48:41.780] Loading module '/usr/lib/weston/fbdev-backend.so'

[17:48:41.797] Output repaint window is 7 ms maximum.

[17:48:41.798] initializing fbdev backend

[17:48:41.798] Loading module '/usr/lib/weston/gal2d-renderer.so'

[17:48:41.803] param->device=/dev/fb0,/dev/fb2

[17:48:41.803] Creating fbdev output. /dev/fb0 x=0 y=0

[17:48:41.803] Opening fbdev frame buffer.

[17:48:41.803] Calculating pixman format from:

- type: 0 (aux: 0)

- visual: 2

- bpp: 32 (grayscale: 0)

- red: offset: 16, length: 8, MSB: 0

- green: offset: 8, length: 8, MSB: 0

- blue: offset: 0, length: 8, MSB: 0

- transp: offset: 24, length: 8, MSB: 0

[17:48:41.803] Number of buffers=1

[17:48:41.824] fbdev output 1920×1080 px

guessing 56 Hz and 96 dpis

[17:48:41.825] Creating fbdev output. /dev/fb2 x=1920 y=0

[17:48:41.825] Opening fbdev frame buffer.

[17:48:41.825] Calculating pixman format from:

- type: 0 (aux: 0)

- visual: 2

- bpp: 32 (grayscale: 0)

- red: offset: 16, length: 8, MSB: 0

- green: offset: 8, length: 8, MSB: 0

- blue: offset: 0, length: 8, MSB: 0

- transp: offset: 24, length: 8, MSB: 0

[1]+ Segmentation fault weston --tty=2 --device=/dev/fb0,/dev/fb2 --use-gal2d=1

we also use the official file (L3.14.52_1.1.0-ga_images_MX6QDLSOLO.tar.gz)for test,and we have the same problem.

can yocto(qt5.5.1+wayland imx-3.14.52-1.1.0_ga) + kernel(3.14) use weston to display multi screen.

Please give me a handle.

Best Regards.

Re: wayland 1.9 cannot display multi screen

Bio_TICFSL — Thu, 25 Feb 2016 16:43:25 GMT

Hi wang

L3.14.52 has a known issue where the fbGetDisplay function called by the fbdev compositor on weston does not return a different display index, thus not being able to render on multiple screens at a time, You need to use the latest fsl_5.0.11.p7 Libraries to solve it.

GitHub - Freescale/kernel-module-imx-gpu-viv: FSL Community fork of Vivante i.MX GPU Linux kernel driver

The Makefile patch will be included in next release.

Hope this helps

Re: wayland 1.9 cannot display multi screen

wangzhigang — Fri, 26 Feb 2016 03:10:08 GMT

hi,Bio

thanks for your replay,I replace the code like that:

replace kernel-module-imx-gpu-viv-src to KERNEL_DIR/drivers/mxc/gpu-viv

and then :

make uImage -j4 LOADADDR=0x10008000

I can't run into the wayland destktop at all,It become worse.

I use the latest fsl_5.0.11.p7 Libraries,but I don't solve my problem,

Please give me a handle.

Best Regards.

Re: wayland 1.9 cannot display multi screen

wangzhigang — Fri, 26 Feb 2016 06:15:08 GMT

hi,Bio

I test 5.0.11.p7.4 and 5.0.11.p7.1 ,now I can run into wayland desktop,but weston still can't display multi screen,and the desktop become all bule.

Re: wayland 1.9 cannot display multi screen

anurags — Tue, 04 Oct 2016 12:36:53 GMT

Hi Wang,

I am facing the same issue posted by you.

I am unable to run weston on multiple displays(fb0 and fb2).

I am using the same yocto build: yocto(qt5.5.1+wayland imx-3.14.52-1.1.0_ga) + kernel(3.14) used by you.

I am struggling to resolve it.

Wang, Please help if you have already resolve this issue.

Thanks

Anurag

Re: wayland 1.9 cannot display multi screen

jjohn — Mon, 28 Nov 2016 05:36:04 GMT

Hi,

I am also trying the multi display with Wayland weston ( HDMI & LVDS) on Quad variant of Sabre Platform and same issue here. The version details are given below

Linux 4.1.15-1.1.1
Qt 5.5.1
Weston 1.9.0

kernel-module-imx-gpu-viv 5.0.11.p8.3

I cant even find the 'use-gal2d' option in Weston 1.9.0, is there any way to make the multi display working with weston 1.9.0.