Il giorno lun, 29/06/2020 alle 18.38 +0200, Bastien Nocera ha scritto: > On Mon, 2020-06-29 at 16:06 +0200, Giuseppe Sacco wrote: > > <snip> > > If I understood what you wrote, the pmu_battery driver registers the > > device as of class "power_supply" calling the function > > power_supply_register() as you may see at line 155 of > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/power/pmu_battery.c?h=v3.16.85 > > > > > > Still, upower cannot find it: > > > > $ upower --enumerate > > /org/freedesktop/UPower/devices/DisplayDevice > > Did you check that the driver was enabled correctly, that it showed up > in sysfs, and could be found in udev? > > I hope you didn't quote "3.16.85" as your current kernel though, the > driver's moved to: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/power/supply/pmu_battery.c
Well, this is another problem I am facing. I installed debian linux and it has been officially supported until a two versions ago, when kernel 3.16 was current. Now I upgraded the complete system to debian unstable and I have latest upower and all packages but kernel. Kernel 5.7 is installed but does not boot the machine. I am working on that as well. In the meantime, I should stick with 3.16.56. But you are right. Despite what I understood reading the kernel source, the running pmu driver does not register as power_supply class, in fact directory /sys/class/power_supply/ is empty. The only class it registers is: $ find /sys/class/ -name pmu /sys/class/misc/pmu I don't know why it does not show up in the power_supply class. Bye, Giuseppe _______________________________________________ devkit-devel mailing list devkit-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/devkit-devel