Re: Odroid U2 Kernel 4.7rc7+ Hang on reboot

[Tobias Jakobi <tjakobi@math.uni-bielefeld.de>]

Krzysztof Kozlowski wrote:
> On 07/15/2016 03:23 PM, Tobias Jakobi wrote:
>> Krzysztof Kozlowski wrote:
>>> On 07/15/2016 03:15 PM, Tobias Jakobi wrote:
>>>> Hey,
>>>>
>>>> Krzysztof Kozlowski wrote:
>>>>> On 07/15/2016 09:55 AM, Krzysztof Kozlowski wrote:
>>>>>>>> Nicolas Dufresne wrote:
>>>>>>>>> Le jeudi 14 juillet 2016 à 15:37 -0400, Nicolas Dufresne a écrit :
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> I'm using the Odroid U2 to test some features implemented in
>>>>>>>>>> GStreamer.
>>>>>>>>>> The parts I need mostly works in mainline kernel, my main
>>>>>>>>>> annoyance
>>>>>>>>>> ist
>>>>>>>>>> that reboot hangs.
>>>>>>>>>>
>>>>>>>>>> Is this issue known ? I'm booting from SD card is that matters.
>>>>>>>>>> Any
>>>>>>>>>> advise would be appreciated. I'm not list member, so please keep
>>>>>>>>>> me
>>>>>>>>>> in
>>>>>>>>>> CC. I'm sharing my .config, in case that is my fault.
>>>>>>
>>>>>> First of all - use just command "reboot" to restart. It should work. If
>>>>>> it doesn't, please let us now.
>>>>>>
>>>>>> I was able to reproduce your issue - OOPS in emergency restart - also in
>>>>>> my configuration (U3 + eMMC + network boot).
>>>>>>
>>>>>> It is weird... I'll take a look at it.
>>>>>
>>>>> Actually I did not encounter OOPS of yours. I was able to reproduce a
>>>>> failure to reboot on U3. XU3 reboots fine. It might be related to pwrseq...
>>>> I'm not sure how much that helps, but I can't reproduce any of this on
>>>> my X2 (which is quite closely related to the U2/U3).
>>>
>>> You mean sysrq reboot works fine?
>> No, I haven't checked that yet. But normal reboot and poweroff via init
>> works properly.
> 
> Yeah, these work fine. It is all about emergency restart.
I can confirm that this indeed doesn't work.

chidori ~ # echo 1 > /proc/sys/kernel/sysrq
chidori ~ # echo s > /proc/sysrq-trigger
chidori ~ # echo u > /proc/sysrq-trigger
chidori ~ # echo b > /proc/sysrq-trigger
<board hangs, only red power LED on>

I guess Nicolas is seeing a different or another problem here though.

With best wishes,
Tobias


> Best regards,
> Krzysztof
> 
> 
>