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MX6 IPU_1task  block

Question asked by Xiaoqiang Yang on Dec 11, 2014
Latest reply on Dec 21, 2014 by igorpadykov

Hi all,

 

I am working on our own designed board based i.MX6Q.Now I connected a 24-bit LVDS panels(4 pairs of LVDS data signals )

to LVDS0 port.And my bootargs for video is:   video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24.

When I boot up linux,my panel can only display some black and white vertical lines like this:

 

And some messages about IPU appeard:

Freeing init memory: 212K

INFO: task ipu1_task:378 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

ipu1_task D 80544b9c 0 378 2 0x00000000

[<80544b9c>] (__schedule0x258/0x6d4) from [<803d2494>] (ipu_task_thread0x260/0xaf0)

[<803d2494>] (ipu_task_thread0x260/0xaf0) from [<800943ec>] (kthread0x80/0x88)

[<800943ec>] (kthread0x80/0x88) from [<80043a5c>] (kernel_thread_exit0x0/0x8)

INFO: task ipu1_task:379 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

ipu1_task D 80544b9c 0 379 2 0x00000000

[<80544b9c>] (__schedule0x258/0x6d4) from [<803d2494>] (ipu_task_thread0x260/0xaf0)

[<803d2494>] (ipu_task_thread0x260/0xaf0) from [<800943ec>] (kthread0x80/0x88)

[<800943ec>] (kthread0x80/0x88) from [<80043a5c>] (kernel_thread_exit0x0/0x8)

 

  • Starting Advanced Power Management daemon... [80G [74G[ OK ]

Last login: Thu Jan 1 00:01:37 UTC 1970 on ttymxc0

speech-dispatcher disabled; edit /etc/default/speech-dispatcher

Checking for running unattended-upgrades:

vgaarb: this pci device is not a vga device

vgaarb: this pci device is not a vga device

  • Starting bluetooth [80G [74G[ OK ]

[33m* [39;49m PulseAudio configured for per-user sessions

saned disabled; edit /etc/default/saned

INFO: task ipu1_task:378 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

INFO: task ipu1_task:379 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

1 Jan 00:00:47 ntpdate[5657]: no server suitable for synchronization found

INFO: task ipu1_task:378 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

INFO: task ipu1_task:379 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

INFO: task ipu1_task:378 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

INFO: task ipu1_task:379 blocked for more than 10 seconds.

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

I think maybe there is some relationship about my LVDS failure.But my HDMI is working OK.

Any advice will be appreciated.

Best Regards

Xiaoqiang

 

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