#10492 LOW F14: idle sleep/suspend fails when booting from external devices

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#10492: idle sleep/suspend fails when booting from external devices
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 Reporter:  mavrothal               |                 Owner:  pgf                              
     Type:  defect                  |                Status:  new                              
 Priority:  low                     |             Milestone:  F14                              
Component:  power manager (powerd)  |               Version:  Development build as of this date
 Keywords:  os3, XO-1               |           Next_action:  diagnose                         
 Verified:  0                       |   Deployment_affected:  none                             
Blockedby:                          |              Blocking:                                   
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 F14, os3, XO-1(CL2), q2e45.[[BR]]
 Idle sleep/suspend works OK when the /boot/olpc.fth folder and F14/os3
 resides in the NAND, regardless of connected devices (SDcard/USBs) at boot
 time.[[BR]]
 However, when an appropriate (eg [1], [2])  /boot/olpc.fth resides in a
 USB/SDcard and os3 in the NAND, idle sleep/suspend fails.[[BR]]
 /var/log/powerd.trace shows all the time "touchfile busy" and /var/run
 /powerd-inhibit-suspend/.fake_activity is present. Manually removing
 .fake_activity does not change behavior[[BR]]
 Occasionally, after prolonged use or suspend (>1h), idle sleep/suspend
 works as expected. [[BR]]
 Suspend by power button or lid closure works as expected in all
 cases.[[BR]]
 Any suggestions on diagnosing are welcome.[[BR]][[BR]]
 Test case:[[BR]]
 Place olpc.fth from [1] in /boot in a USB stick and boot with the "O" game
 key pressed.[[BR]]
 [[BR]]

 [1] http://wiki.laptop.org/go/Custom_bootloader
 #A_single_bootloader_for_both_XO-1_and_XO-1.5 [[BR]]
 [2] http://www.olpcnews.com/forum/index.php?topic=4903.msg32741#msg32741
 [[BR]]

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Ticket URL: <http://dev.laptop.org/ticket/10492>
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