at the same time, i get ipu1_task "D" status, and then the screen can't display anything. log attached.
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 1 address=0x32180000
mxc_sdc_fb mxc_sdc_fb.0: Update complete
warning: `zygote' uses 32-bit capabilities (legacy support in use)
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
request_suspend_state: wakeup (3->0) at 19259779337 (1970-01-01 00:00:12.7501263 35 UTC)
cpufreq_interactive_input_connect: connect to ft5x0x_ts
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 2 address=0x32300000
mxc_sdc_fb mxc_sdc_fb.0: Update complete
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32000000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32000000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32180000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32180000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32300000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32300000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
eth0: Freescale FEC PHY driver [Generic PHY] (mii_bus:phy_addr=1:06, irq=-1)
ADDRCONF(NETDEV_UP): eth0: link is not ready
acc_open
acc_release
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
ehci_fsl_bus_resume begins, Host 1
ehci_fsl_bus_resume ends, Host 1
ehci_fsl_bus_resume begins, DR
ehci_fsl_bus_suspend begins, Host 1
ehci_fsl_bus_suspend ends, Host 1
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32000000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32000000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32180000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32180000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32300000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32300000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32000000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32000000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32180000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32180000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
init: sys_prop: permission denied uid:1003 name:service.bootanim.exit
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32300000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32300000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32000000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32000000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32180000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32180000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: Y wrap disabled
mxc_sdc_fb mxc_sdc_fb.0: timeout when waiting for flip irq
mxc_sdc_fb mxc_sdc_fb.0: Updating SDC DISP4 BG buf 0 address=0x32300000
mxc_sdc_fb mxc_sdc_fb.0: Error updating SDC buf 0 to address=0x32300000, current buf 2, buf0 ready 1, buf1 ready 1, buf2 ready 1
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0
mxc_sdc_fb mxc_sdc_fb.0: MXCFB_WAIT_FOR_VSYNC: timeout 0