#11542 HIGH 1.75-so: XO suspends with power LED on

[Zarro Boogs per Child]

#11542: XO suspends with power LED on
-----------------------+----------------------------------------------------
 Reporter:  greenfeld  |                 Owner:                                   
     Type:  defect     |                Status:  new                              
 Priority:  high       |             Milestone:  1.75-software                    
Component:  kernel     |               Version:  Development build as of this date
 Keywords:             |           Next_action:  diagnose                         
 Verified:  0          |   Deployment_affected:                                   
Blockedby:             |              Blocking:                                   
-----------------------+----------------------------------------------------
 SKU 201/SHC14300939 and occasionally other 1.75 C1 XOs we have rarely but
 repeatedly go into suspend with the power LED solidly lit in a state which
 seems impossible to recover from gracefully.  Touching the keyboard or
 power button will not wake up the XO with this occurs.

 This has been seen in runin conditions, and no_console_suspend does not
 help.  The output from the Linux kernel when this happens does not appear
 unusual:

 {{{
 [ 1435.576201] [galcore]: gpu_resume, 1369
 [ 1435.576201] >>>>>>[_gpu_on]@1153
 [ 1435.585759] <<<<<<[_gpu_on]@1173
 [ 1435.625761] usb 1-1: reset high speed USB device number 2 using pxau2o-
 ehci
 [ 1435.906483] dcon_source_switch to CPU
 [ 1435.907115] PM: resume of devices complete after 590.037 msecs
 [ 1435.996430] olpc-dcon: The CPU has control
 [ 1436.000506] Restarting tasks ...
 [ 1436.065831] done.
 [ 1436.341937] mmc1: new SDIO card at address 0001
 [ 1437.265181] libertas_sdio mmc1:0001:1: (unregistered net_device):
 20:7c:8f:6d
 :81:64, fw 9.70.3p36, cap 0x000003a3
 [ 1437.291006] libertas_sdio mmc1:0001:1: wlan0: Marvell WLAN 802.11
 adapter
 [ 1437.347624] udev[6474]: renamed network interface wlan0 to eth0
 [ 1437.442027] ADDRCONF(NETDEV_UP): eth0: link is not ready
 [ 1559.287809] PM: Syncing filesystems ... done.
 [ 1559.349000] Freezing user space processes ... (elapsed 2.79 seconds)
 done.
 [ 1562.175772] Freezing remaining freezable tasks ... (elapsed 0.01
 seconds) don
 e.
 [ 1562.195775] Suspending console(s) (use no_console_suspend to debug)
 }}}

 Seen with multiple OS builds including 11.3.1 os19/Q4C07.

-- 
Ticket URL: <http://dev.laptop.org/ticket/11542>
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