03:50 <SteveM> Good morning, after 11 years I bought an another n900, got scammed as it was suppose to be fully working, only to find that the screen is kinda defective, I can calibrate the top scree 1 and 2 but no way I can calibrate the second bottom half 3 and 4, do you think I should replace the touch screen or a flash might save it...

06:37 <sicelo> Sorry about that. You will have to replace the touch. Or, give up on N900 and get Droid 4 or pinephone

07:32 <tmlind> uvos: is plain v5.15-rc1 booting for you with battery connected? i can boot my test device with no battery, but my phone fails to boot..

07:33 <tmlind> also my flakey pl2303 debug port is acting up, so not seeing phone debug output right now..

07:35 <tmlind> oh well need to continue debugging later

08:07 <sixwheeledbeast> digitiser more than screen

08:08 <sixwheeledbeast> flash is always worth it

10:31 <Wizzup> I tried to replace a digitiser but it was quite hard :)

10:35 <sixwheeledbeast> possibly the digitizer flex/connector or main flex/connector? if you rule out the software your left with a hardware fault.

14:27 <uvos> tmlind: no i generaly dont try new kernel versions on d4 until i rebase my stuff off your branch as i treat you as my upstream

14:27 <uvos> tmlind: but if your having issues with your usb-ttl i can capture the output for you later

15:43 <uvos> parazyd: what about acitvating charge-mode for mapphones?

15:43 <uvos> we should do this at some point..

16:24 <uvos> charge mode now also works fine on n900

16:24 <Wizzup> neat

16:25 <uvos> should work fine on pp too anyhow

16:25 <uvos> but cant test obv

16:28 <lel> IMbackK synchronize a pull request: https://github.com/maemo-leste/leste-config/pull/25 (add quirks-mapphone to mapphone mce config)

16:29 <lel> IMbackK synchronize a pull request: https://github.com/maemo-leste/leste-config/pull/25 (add quirks-mapphone to mapphone mce config)

16:29 <lel> IMbackK edited a pull request: https://github.com/maemo-leste/leste-config/pull/25 (Various leste-config changes)

16:30 <lel> IMbackK edited a pull request: https://github.com/maemo-leste/leste-config/pull/25 (Various leste-config changes)

16:30 <uvos> ^^^ this is also needed for charge-mode on n900

16:31 <uvos> and the cmdline change same as mapphones ofc

16:58 <lel> IMbackK synchronize a pull request: https://github.com/maemo-leste/leste-config/pull/25 (Various leste-config changes)

19:37 <sicelo> uvos: critical voltage for N900 shall be below 3248mV, otherwise the device will never calibrate. iirc, 3198 is a good value.

19:47 <uvos> sicelo: upower/mce take very long to realise that the voltage has dropped so idk if 3.198 is early enough to have it make it

19:47 <uvos> sicelo: the same problem exits on mapphones too

19:47 <uvos> we maybe need some sort of callibration mode

19:48 <uvos> 3198 also seams like quite a random value

19:48 <uvos> where is that comeing from?

19:50 <uvos> really 3.2 ish volts is bad if you keep it up

19:50 <uvos> https://www.dnkpower.com/wp-content/uploads/2019/01/discharging-curve-lipo-battery.png

19:51 <uvos> see the discarge curve of a lipo, there is no power below 3.3

19:51 <uvos> cycle life wise it drops off conciderably below 3.3v too

20:02 <sicelo> the thing is - 3248 is burned into the EPROM of bq27200

20:03 <uvos> yeah sure

20:03 <uvos> but why 3.198?

20:03 <uvos> that seams random

20:03 <sicelo> lol

20:03 <uvos> is it x adc steps?

20:03 <sicelo> anyway, the voltage must be below 3248 for around 15s, iirc

20:03 <uvos> lol?

20:05 <sicelo> 3198 is what nokia had in bme.

20:06 <sicelo> just make it whatever you like really. but if it's higher than 3248, your users will not be able to calibrate their batteries.

20:08 <sicelo> the Li-ion batteries in the Nokias seem to perform alright with these low voltages ... at least I don't recall issues about premature battery wear mentioned anywhere on tmo. i know Li-Po and Li-ion are similar in many ways though

20:10 <uvos> well li-po = li-ion

20:10 <uvos> lipo is just a type of liion

20:10 <uvos> anyhow yeah some solution is needed

20:10 <uvos> ill lower the voltage for now

20:11 <uvos> but i would be more comfortable with a 3.3v and a special charge mode maybe

20:11 <uvos> the battery in n900 is lipo no?

20:11 <uvos> sure feals like one

20:11 <uvos> but have not dissasembled

20:11 <sicelo> it's Li-ion