XO screen pulses after "standby", OOM afterwards

[pgf at laptop.org]

s wrote:
 > Twice with 8.2-759 my G1G1 machine has had the screen flash on and off 
 > coming out of a "standby" (screen off) state.  The second time seemed a 
 > memory pressure state, I typed some memory commands at random and saved 
 > the output at http://wiki.laptop.org/go/User:Skierpage/out-of-memory

except for your low battery issue, i had something quite similar happen
the other day at OLPC.  i couldn't figure out how to reproduce it, but
i did happen twice.  it was clearly in a mode where it kind of wanted
to wake up, but then immediately went back to sleep.  i describe it
this way because the second time it happened, i was eventually able to
get it to stay "awake" by very quickly hitting a key during the brief
interval that the screen was on.  i recall thinking that the idle timeout
hadn't been reset by my hitting the power button, or something like
that.

can you file a bug with what you've written here?  i can add my
partial report as well.

paul

 > 
 > 
 > The pulsings happened after I left my XO disconnected from power and it 
 > went dead, so much so that I had to do a 
 > http://wiki.laptop.org/go/XO_Full_Reset.  But the laptop was running 
 > fine before the screen went off.  Both times:
 > 
 > * Screen is off, but IIRC the green power light is on.
 > 
 > * I press the power on button, nothing happens.  So press it some more, 
 > also press some random keyboard keys.
 > 
 > * Then the screen flashes on for less than a second, goes blank for 
 > about 40 seconds, flashes on, goes blank for 40 seconds...  The first 
 > time the screen flashed at least 10 times before staying on, this time 
 > it flashed at least three times.
 > 
 > Both times it feels as if the laptop is so sluggish that it's queued up 
 > my power button presses.
 > 
 > The second time (as I write this) the laptop seems extremely slow 
 > afterwards.  I started Terminal Activity and it's taken over 3 minutes 
 > to start.  `free` reports total 235748, used 230248, free 5500.
 > 
 > It's odd that both times my XO was chugging along fine before it went 
 > into "standby", so if it's a memory problem the laptop ran out of memory 
 > while I wasn't doing anything!?  I think both times I had "Automatic 
 > power management" on, but not "Extreme power management".
 > 
 > Unfortunately I couldn't find a guide what to do if your XO is 
 > out-of-memory! I ran `ps alx/free/ps_mem.py`, again after killing Write, 
 > then after restarting X and Sugar, and then after a reboot.  I saved the 
 > results at http://wiki.laptop.org/go/User:Skierpage/out-of-memory
 > 
 > If there are useful steps testers should follow when their XO goes slow 
 > as molasses, point me to them, I'll put it on the wiki.
 > 
 > 
 > BTW, I've now upgraded to 8.2-760.  olpc-upgrade was flawless!
 > 
 > Cheers,
 > --
 > =S Page   user:skierpage
 > _______________________________________________
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 > Devel at lists.laptop.org
 > http://lists.laptop.org/listinfo/devel

=---------------------
 paul fox, pgf at laptop.org