ben_deering at swissmail.org
Wed Jul 16 13:26:23 CEST 2014
On 07/16/2014 04:50 AM, Dr. H. Nikolaus Schaller wrote:
> Am 16.07.2014 um 02:51 schrieb Benjamin Deering:
>> Hello all,
>> I spent a little time with the new kernel today.
>> I noticed an error message (can't find the exact text now) that complained about the lack of control groups and delayed booting for 10 seconds.
> Well, our ALSA extensions (headset jack etc.) are broken. Therefore I have patches some driver to return -EINVAL. This makes amixer initialisation fail during boot.
>> If this isn't some SHR specific thing, I can send a patch to the config enabling them.
> Yes, please check.
I rebuilt again without control groups. Here is the message:
<28>systemd: CONFIG_CGROUPS was not set when your kernel was compiled.
Systems without control groups are not supported. We will now sleep for
10s, and then continue boot-up. Expect breakage and please do not file
bugs. Instead fix your kernel and enable CONFIG_CGROUPS. Consult
http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more
<28>systemd: No control group support available, not creating root
So it is systemd specific. I know debian is switching to systemd at some
point. Should I send the (very small) patch?
>> Backlight dimming isn't working, maybe this is old. It doesn't seem to be a userspace issue - writing stuff directly to the sysfs nodes doesn't affect brightness.
> The OMAP-PWM driver is missing.
>> The new kernel boots and usb networking works, so that makes it easier to work on things.
> Yes, that is important. If USB networking works it makes it easier to replace the kernel on the SD card and reboot - without fiddling around with battery and SD cards.
>> I don't know if I will get to do anything else with this this week.
> Any experience (what works, what does not work as expected) is welcome!
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