TDA4VM: How to run Weston clients demos

qing wang

Prodigy 75 points

Part Number: TDA4VM

HI All,

I want to run the weston clinet demo on the J7 TDA4 and DP displays according to

software-dl.ti.com/.../Graphics_and_Display.html

but I get following errors in modetest command

1、root@j7-evm# modetest -M tidss -c
failed to open device 'tidss': No such file or directory

2、when launch Weston，with --tty-1 and without --connector argument, I get following error

root@j7-evm:/etc/init.d# weston --tty=1
Date: 2021-11-30 UTC
[03:01:53.854] weston 8.0.0
wayland.freedesktop.org
Bug reports to: gitlab.freedesktop.org/.../
Build: 8.0.0
[03:01:53.854] Command line: weston --tty=1
[03:01:53.854] OS: Linux, 5.4.106-00004-g31e5a020266e-dirty, #4 SMP PREEMPT Fri Dec 10 07:51:47 UTC 2021, aarch64
[03:01:53.854] Using config file '/etc//weston.ini'
[03:01:53.854] Output repaint window is 7 ms maximum.
[03:01:53.854] Loading module '/usr/lib/libweston-8/drm-backend.so'
[03:01:53.857] initializing drm backend
[03:01:53.857] logind: failed to get session seat
[03:01:53.857] logind: cannot setup systemd-logind helper (-61), using legacy fallback
[03:01:53.857] no drm device found
[03:01:53.857] fatal: failed to create compositor backend
Internal warning: debug scope 'drm-backend' has not been destroyed.

Can anybody help me to figure out these problem?

Thanks in advance,

over 2 years ago

0 Hemant Hariyani over 2 years ago

TI__Expert 8385 points

Hello,

Which SDK are you using? If you are using Processor SDK RTOS, the display is controlled by R5 and you will not be able to run Weston demos. If you use Processor SDK Linux, the display is controlled by Linux running on A72 and you will have the drm device required to run Weston.

Regrds

Hemant

0 qing wang over 2 years ago in reply to Hemant Hariyani

Prodigy 75 points

Hello Hemant Hariyani,

Thank you very much for your reply！

I think I used all because I modify and compiled them with yocto,but I can not run any app of rtos when running weston demo.

1、How can I use Processor SDK Linux only？

2、Other reply of E2E said that remove &&dss{status = "disable"} in vision-apps dts can resolve question of modetest command,but I get result following that No DP display connectors id. And weston also don't run.

root@j7-evm:/dev/dri# modetest -M tidss -c
Connectors:
id encoder status name size (mm) modes encoders

3、which directory can DRM device be found？this is drm device following?

root@j7-evm:/dev/dri# ls
by-path card0 card1 renderD128

Can you give me a detailed guide of running weston demo？

Thanks

0 Brijesh Jadav over 2 years ago in reply to qing wang

TI__Guru**** 399330 points

Hi qing wang,

Any specific reason why you want to run modetest?

Can you follow step-1 on below link and boot the Linux on board and then try modetest command?

https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/latest/exports/docs/vision_apps/docs/user_guide/RUN_INSTRUCTIONS.html

Regards,

Brijesh

0 qing wang over 2 years ago in reply to Brijesh Jadav

Prodigy 75 points

hello,

I want to run the weston demo according to the documentation(software-dl.ti.com/.../Graphics_and_Display.html, the first step in the documentation is to run modetest to find Connector ID.

+1 Brijesh Jadav over 2 years ago in reply to qing wang

TI__Guru**** 399330 points

Hi qing wang,

Since we are discussing about modetest on below thread, closing this ticket.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1066113/tda4vm-tda4vm-the-question-of-egl-api/4016299#4016299

Regards,

Brijesh

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TDA4VM: How to run Weston clients demos