#10999 NORM Not Tri: XO-1.75 A3 idt1338 chip loses oscillator over laptop power cycle
Zarro Boogs per Child
bugtracker at laptop.org
Tue Jun 14 00:41:44 EDT 2011
#10999: XO-1.75 A3 idt1338 chip loses oscillator over laptop power cycle
--------------------------+-------------------------------------------------
Reporter: Quozl | Owner:
Type: defect | Status: new
Priority: normal | Milestone: Not Triaged
Component: not assigned | Version: not specified
Keywords: | Next_action: never set
Verified: 0 | Deployment_affected:
Blockedby: | Blocking:
--------------------------+-------------------------------------------------
Method:
* start OpenFirmware and stop at ok prompt,
* query the oscillator stop flag of the idt1338 chip,
{{{
dev /rtc 7 rtc@ 20 and .
}}}
and expect result ''20'', which means the bit is set,
* clear the bit,
{{{
7 rtc@ 20 xor 7 rtc!
}}}
* check the bit,
{{{
7 rtc@ 20 and .
}}}
and expect result ''0'', which means the bit is cleared,
* reboot with
{{{
reboot
}}}
and again obtain the ok prompt,
* check the bit,
{{{
dev /rtc 7 rtc@ 20 and .
}}}
and expect result ''0'', which means the RTC oscillator was not stopped
by the reboot, a nominal finding,
* power off with
{{{
power-off
}}}
then use the power button to turn the laptop back on,
* check the bit,
{{{
dev /rtc 7 rtc@ 20 and .
}}}
Expected result: 0.
Observed result: 20, an abnormal finding indicating that the RTC
oscillator was stopped by the power cycle.
--
Ticket URL: <http://dev.laptop.org/ticket/10999>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system
More information about the Bugs
mailing list