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EPDC underrun

Question asked by DannyXiao on Aug 20, 2013
Latest reply on Aug 28, 2013 by jimmychan

Dear FSL team

       We have a project running on MX6SL platform. And now when we running the suspend/resume test repeatly. I suffered below error case and the system is blocked, the EPDC can not update anything at this time. Could you advice how we can deal with this issue??

 

[ 1963.661485]

[ 1963.661491]

[ 1963.661497] request_suspend_state: on->standby (0->1) at 1962635602640 (2013-01-01 01:33:00.784244667 UTC)

[ 1963.661510]

[ 1963.738765] PM: Syncing filesystems ... done.

[ 1963.744801] suspend: start 416 suspend...

[ 1963.755953] suspend: finish 416 suspend after:0.11138001 seconds...

[ 1963.762250] Freezing user space processes ... (elapsed 0.02 seconds) done.

[ 1963.798682] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.

[ 1963.926014] PM: suspend of devices complete after 104.411 msecs

[ 1963.932440] PM: late suspend of devices complete after 0.494 msecs

[ 1963.940533] Suspended for 0.000 seconds

[ 1963.944830] PM: early resume of devices complete after 0.386 msecs

[ 1963.951151] wakeup wake lock: alarm_rtc

[ 1963.969219] PM: resume of devices complete after 14.067 msecs

[ 1963.979237] Restarting tasks ... done.

[ 1963.993469] suspend: finish 416 suspend after:6.156886335 seconds...

[ 1964.009913] suspend: exit suspend, ret = 0 (2013-01-01 01:33:07.040907335 UTC)

[ 1965.744297]

[ 1965.744303]

[ 1965.744309] request_suspend_state: standby->on (1->0) at 1964716638640 (2013-01-01 01:33:08.775283334 UTC)

[ 1965.744322]

[ 1965.863542] imx_epdc_fb imx_epdc_fb: TCE underrun! Will continue to update panel

[ 1965.892577] imx_epdc_fb imx_epdc_fb: TCE underrun! Will continue to update panel

[ 1967.241502] imx_epdc_fb imx_epdc_fb: TCE underrun! Will continue to update panel

[ 1968.808557]

[ 1968.808564]

[ 1968.808569] request_suspend_state: on->standby (0->1) at 1967780904641 (2013-01-01 01:33:11.839549668 UTC)

[ 1968.808582]

[ 1968.867401] PM: Syncing filesystems ... done.

[ 1968.874138] suspend: start 417 suspend...

[ 1968.878247] suspend: finish 417 suspend after:0.4102667 seconds...

[ 1968.884451] Freezing user space processes ... (elapsed 0.01 seconds) done.

[ 1968.910449] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.

[ 1976.927662] imx_epdc_fb imx_epdc_fb: Flush updates timeout! ret = 0x0

[ 1979.057791] PM: suspend of devices complete after 10124.418 msecs

[ 1979.064400] PM: late suspend of devices complete after 0.503 msecs

[ 1979.072483] Suspended for 0.000 seconds

[ 1979.076782] PM: early resume of devices complete after 0.385 msecs

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