2009-02-27 22:54:06 QT and standby mode
Dzung Dang (VIET NAM)
Message: 70127
Dear all,
I am using 2008R1.5 release and QT Embedded 3.5.5.
I am trying to use standby mode for saving power. I follow the website instruction for user application.
http://docs.blackfin.uclinux.org/doku.php?id=power_management_support
The standby mode works well with console program. But for QT program, after waking up, the program hang.
Can anyone tell me how to config QT to work with standby mode?
Thanks a lot.
QuoteReplyEditDelete
2009-02-28 10:14:40 Re: QT and standby mode
Robin Getz (UNITED STATES)
Message: 70161
Dzung:
Any application hangs? or just Qt ones?
-Robin
QuoteReplyEditDelete
2009-03-01 22:05:53 Re: QT and standby mode
Dzung Dang (VIET NAM)
Message: 70187
Hi Robin,
Only QT application hangs. Other programs continued to work after waking up from standby mode.
Dzung
QuoteReplyEditDelete
2009-03-01 22:49:57 Re: QT and standby mode
Robin Getz (UNITED STATES)
Message: 70188
Dzung:
From userspace - it shouldn't matter. (in theory)
Can you try something that is active on the display? What display driver are you using? and does it handle suspend/resume properly?
-Robin
QuoteReplyEditDelete
2009-03-02 00:02:06 Re: QT and standby mode
Dzung Dang (VIET NAM)
Message: 70190
Hi Robin,
I am using board CM-BF561 from Bluetechnix with Hitachi TX09D70VM1CDA TFT LCD. The orginal driver is not synchronous when suspend ( the clock and power still on). So that I modified the driver to turn off the TFT LCD during standby. With new driver, I have tested a program display some pics on TFT and it woked well after waking up from standby. So I think the problem is from QT.
Dzung.