"H. Nikolaus Schaller" <[email protected]> writes: >> >> I think Radek ‘lost interest' because of lack of some of the lower level >> points in my list above, principally the battery consumption.
Battery consumption is the main issue that depresses my enthusiasm. It *seems* insoluble. It probably isn't, but I haven't found a way forward. > > Well, with 3.7 it was almost good. I would say 3.7 is just barely usable - if you have a new battery. > > A problem for me is that QtMoko has some very nice tools to support battery > consumption measurements. But because it does neither run on 3.12 or later > kernels, we can’t even test battery consumption easily. How to improve the > kernel if a good GUI is missing. Measuring battery usage isn't that hard. In the simplest case you just need to log the time (seconds) and the charge-now value from the bq27000 and graph those. I log them on every 'suspend' and 'resume' so I can easily get data. I find it a bit harder at present because all of my batteries with bq27000 in them have died. I've got a Nokia BL-5C in my phone at the moment. I ripped the bq27000 board off one of the dead batteries and managed to attach it to another BL-5C so I can do measurements, but only on my old "spare" board (which has lost its USB connector so I need WIFI for all networking...) If I could even get current mainline down to 3.7 power usage levels I'd probably be motivated to keep working on upstreaming things, but I've hit a brick all there too. NeilBrown
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