How to solve the problem that the imx6dl console print the fb0 error

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How to solve the problem that the imx6dl console print the fb0 error

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pengxingwei
Contributor III

Hello all,

            I come cross a problem ,the imx6dl console is always print the log:

[2308151.755871] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308152.265892] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308152.775892] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308153.285885] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308153.795892] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308154.306169] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308160.235880] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308160.745877] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308161.255889] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308161.765887] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308181.575883] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308182.095867] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308183.115928] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308183.635924] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308187.345912] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308187.855995] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308188.885913] mxc_sdc_fb fb@0: timeout when waiting for flip irq
[2308189.395906] mxc_sdc_fb fb@0: timeout when waiting for flip irq

my platform is imx6dl,on which run Android6.0.1 OS (kernel 4.1.15) , the lcd display is normal ,but when the board is run for a long time about several days, the LCD display is abnormal ,and I print the log by uart console,it always print:

mxc_sdc_fb fb@0: timeout when waiting for flip irq

How to solve it ? Thanks

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joanxie
NXP TechSupport
NXP TechSupport

The error means there is display underrun on IPU. what operation do you do when the board is runing?To reduce the failure, the customer can add "dmfc=3" in the kernel boot command line

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