On Wed, Jan 03, 2007 at 02:09:53PM +0100, César Gómez Martín wrote: > > Eddy Petrișor escribió: > > >I think I have seen also a decrease in battery time in sleep mode with > >the new kernel (2.6.18-3), > >but I am not sure is the kernel since I have seen this only with the > >original battery. > I haven't seen battery changes at all, it is just those "lost interrupt" > problems that hang the whole system. I checked the disk with the Apple > Test CD, with smartctl and more tools and the disk is always ok. > I think I'm seeing a reduced sleep time with 2.6.18.2 on an ibook G4 (7447A cpu). At first I assumed the battery was showing it's age, but I've just run some tests and I think there _is_ heavier battery usage.
My test was somewhat simplistic (charge while sleeping, open, record battery information, sleep for approx 6 hours, open, record, calculate). It's important to sleep for a similar time on each test, from a full charge, because the battery use reported is not linear. With 2.6.18.2 (compiled with gcc-4.1.1) I saw the charge decline by 240 units (mA?) in 21551 seconds, or an average time-per-unit of 89.8 seconds. With 2.6.17.13 (compiled with gcc-4.0.2, running on a different partition) I saw a decline of only 193 units in 21532 seconds (111.5 seconds per unit). At the moment, I don't know how repeatable these figures are. I think I'd better try 2.6.19.1 and then 2.6.20-rc to see if it has already been fixed (assuming the figures are indeed repeatable). ĸen -- das eine Mal als Tragödie, das andere Mal als Farce
