Re: [qtmoko] flight mode power consumption / turning gsm back on
On Tuesday, August 28, 2012 08:54:12 AM robin wrote: I have a question regarding the flight mode: if I turn it on (GTA02 qtmoko v47) the icon is shown on the home screen and calls are not possible anymore, so this is how I expected it to behave, but the antenna still seems to be on as I see some bars indicating reception and the power consumption stays the same as without flight mode. I dont know much about it, but i think flight mode means that you dont transmit any signal, but you can still receive signal strength. Modems have AT commands for airplane mode. I tried it on GTA04 (AT_OAIR) without any effect, maybe i did something wrong... there once was a paper which looked at different parts of power consumption of the freerunner and if I remember correctly GSM was one of the major consumers. You can check yourself - power off the modem and put the phone in suspend and watch charge_now: http://lists.goldelico.com/pipermail/gta04-owner/2012-August/002853.html Now if I turn flight mode of the GSM apparently cannot connect to the station anymore and I have to reboot. No idea here. I dont use airplanes ;-) Regards Radek ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [qtmoko] flight mode power consumption / turning gsm back on
Excerpts from robin's message of 2012-08-28 06:54:12 +: I have a question regarding the flight mode: if I turn it on (GTA02 qtmoko v47) the icon is shown on the home screen and calls are not possible anymore, so this is how I expected it to behave, but the antenna still seems to be on as I see some bars indicating reception and the power consumption stays the same as without flight mode. there once was a paper which looked at different parts of power consumption of the freerunner and if I remember correctly GSM was one of the major consumers. Now if I turn flight mode of the GSM apparently cannot connect to the station anymore and I have to reboot. robin +1 i use my Freerunner without SIM just as PDA+wifi so turn off GSM would make a lot of sense... ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [qtmoko] flight mode power consumption / turning gsm back on
On Tuesday, August 28, 2012 01:22:29 PM elf Pavlik wrote: +1 i use my Freerunner without SIM just as PDA+wifi so turn off GSM would make a lot of sense... You can edit /opt/qtmoko/qpe.env and change: export QTOPIA_PHONE=AT to export QTOPIA_PHONE=Dummy and call modem-poweroff.sh somewhere after boot (/etc/rc.local or qpe.sh). Btw if you are in airplane mode it should be not possible to use bluetooth and wifi. Regards Radek ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [qtmoko] flight mode power consumption / turning gsm back on
On 08/28/2012 07:21 AM, Radek Polak wrote: On Tuesday, August 28, 2012 08:54:12 AM robin wrote: I have a question regarding the flight mode: if I turn it on (GTA02 qtmoko v47) the icon is shown on the home screen and calls are not possible anymore, so this is how I expected it to behave, but the antenna still seems to be on as I see some bars indicating reception and the power consumption stays the same as without flight mode. I dont know much about it, but i think flight mode means that you dont transmit any signal, but you can still receive signal strength. Modems have AT commands for airplane mode. I tried it on GTA04 (AT_OAIR) without any effect, maybe i did something wrong... there once was a paper which looked at different parts of power consumption of the freerunner and if I remember correctly GSM was one of the major consumers. You can check yourself - power off the modem and put the phone in suspend and watch charge_now: http://lists.goldelico.com/pipermail/gta04-owner/2012-August/002853.html Now if I turn flight mode of the GSM apparently cannot connect to the station anymore and I have to reboot. No idea here. I dont use airplanes ;-) Regards Radek ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community I always meant to hack my install to change it from 'airplane mode' to 'woods mode' because a GSM radio that is out of range of towers devours the battery. On GTA02, power consumption drops a lot in this mode. On my most recent trip I powered my GTA04 off completely unless I needed to check the GPS. On a trip this winter a friend with a certain apple product was amazed at the battery life they got in airplane mode. 3 days of photo-viewing and listening to mp3s and it still had extra battery. Ben ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [qtmoko] flight mode power consumption / turning gsm back on
hi ben, could you please give some more detail on how do you set it in woods mode? and does the gsm power on afterwards correctly or do you have to restart the phone? thanks robin ps: here is the link to the paper on powerconsumption of the freerunner: http://www.ssrg.nicta.com.au/publications/papers/Carroll_Heiser_10.pdf ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [qtmoko] flight mode power consumption / turning gsm back on
Hi, You can edit /opt/qtmoko/qpe.env and change: export QTOPIA_PHONE=AT to export QTOPIA_PHONE=Dummy and call modem-poweroff.sh somewhere after boot (/etc/rc.local or qpe.sh). it seems that my GTA02 with QtMoko v47 hasn't the script modem-poweroff.sh. When I make find -name *modem* I didn't have any script (but other files that doesn't seem to be executable, except dsl-modem.agent). Perhaps, I've missed something ? Regards, Adrien ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [qtmoko] flight mode power consumption / turning gsm back on
On 08/28/2012 07:44 AM, robin wrote: hi ben, could you please give some more detail on how do you set it in woods mode? and does the gsm power on afterwards correctly or do you have to restart the phone? thanks robin ps: here is the link to the paper on powerconsumption of the freerunner: http://www.ssrg.nicta.com.au/publications/papers/Carroll_Heiser_10.pdf ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community I use SHR most of the time, but the same thing should apply. I just meant to change the GUI to call 'airplane mode' 'woods mode' because my phones go in the woods and I don't fly very much at all. I suspect something is wrong with airplane mode on both qtmoko and SHR for gta04 if airplane mode doesn't use less power. Transmitting would be the biggest power draw and even if the modem remained powered up power consumption should drop unless it is transmitting. On gta02, I could turn 'airplane mode' off and on and it usually worked. I never spent a lot of time watching power consumption on gta02, but I did keep track of battery life. On gta04, we are still figuring out power management and I had some charging issues so I was dumping 'current_now' once a second in various configurations. A somewhat unrelated thing I noticed and should report is that the 'idle dim' state of fsodeviced actually uses more power. The process of smoothly dimming the display wakes up the CPU and by the time it settles back down, it is time to turn off the display anyway. I didn't mean to steer this away from qtmoko, but I think most of the power related issues we are seeing are happening at a low level and apply to all distros. Ben ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: [qtmoko] flight mode power consumption / turning gsm back on
On Tue, 28 Aug 2012 08:21:20 -0400 Benjamin Deering ben_deer...@swissmail.org wrote: On 08/28/2012 07:44 AM, robin wrote: hi ben, could you please give some more detail on how do you set it in woods mode? and does the gsm power on afterwards correctly or do you have to restart the phone? thanks robin ps: here is the link to the paper on powerconsumption of the freerunner: http://www.ssrg.nicta.com.au/publications/papers/Carroll_Heiser_10.pdf ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community I use SHR most of the time, but the same thing should apply. I just meant to change the GUI to call 'airplane mode' 'woods mode' because my phones go in the woods and I don't fly very much at all. I suspect something is wrong with airplane mode on both qtmoko and SHR for gta04 if airplane mode doesn't use less power. Transmitting would be the biggest power draw and even if the modem remained powered up power consumption should drop unless it is transmitting. On gta02, I could turn 'airplane mode' off and on and it usually worked. I never spent a lot of time watching power consumption on gta02, but I did keep track of battery life. On gta04, we are still figuring out power management and I had some charging issues so I was dumping 'current_now' once a second in various configurations. A somewhat unrelated thing I noticed and should report is that the 'idle dim' state of fsodeviced actually uses more power. The process of smoothly dimming the display wakes up the CPU and by the time it settles back down, it is time to turn off the display anyway. I didn't mean to steer this away from qtmoko, but I think most of the power related issues we are seeing are happening at a low level and apply to all distros. On a GTA02 you power off the GSM chip by writing AT@POFF to the modem. This definitely reduces power usage quite a lot. You then typically write '0' to the 'power_on' and 'reset' sysfs files, but that isn't so important I think. If you are using gsm0710muxd, it will do all that for you when you tell it to. You need to use some D-Bus command that I'm not familiar with. Something like bus-send --system --print-reply --type=method_call \ --dest=org.pyneo.muxer /org/pyneo/Muxer \ org.freesmartphone.GSM.MUX.SetPower bool:false maybe. NeilBrown signature.asc Description: PGP signature ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
