[Letux-kernel] letux v5.4 + suspend

H. Nikolaus Schaller hns at goldelico.com
Wed Nov 27 21:49:16 CET 2019


> Am 27.11.2019 um 21:38 schrieb Andreas Kemnade <andreas at kemnade.info>:
> 
> Hi,
> 
> On Tue, 26 Nov 2019 23:01:08 +0100
> Andreas Kemnade <andreas at kemnade.info> wrote:
> 
>> Hi,
>> 
>> while I get down to the typical 26mA idle current on GTA04A5, I do not
>> wake up from suspend there. 
>> Not investigated yet.
>> 
> Played around on the letux3704:
> 
> init=/bin/bash
> mounting sysfs, proc
> /etc/rcS.d/udev start
> 
> and then doing rtcwake -s 20 -m mem
> does not wake up
> 
> rm -rf /lib/modules/5.4.0-letux+/kernel/drivers/gpu/drm/pvrsgx
> 
> fixes the issue.

Important finding. So this means the SGX driver stops wakeup from suspend?
I have added Tony and the openpvrsgx mailing list.

For more dynamic tests you could
* boot
* lsmod | grep pvrsgx
* echo blacklist pvrsrvkm_driver_name >/etc/modprobe.d/pvr.conf
* reboot
* modprobe pvrsrvkm_driver_name to see what it does influence

BR and thanks,
Nikolaus



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