[amd-gfx] AMD Carrizo - GPU fault detected: 146 0x0842b714

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On 21.06.2016 19:16, Mads wrote:
> I sent this for 1.5 hours ago, but since it hasn't arrived to the
> mailing list yet, I try again...

It arrived, no worries :)

I'll take a look later.

Nicolai

>
> On 2016-06-21 17:48, Mads wrote:
>
>> On 2016-06-21 10:12, Mads wrote:
>>
>> On 2016-06-21 09:39, Nicolai Hähnle wrote:
>>
>> Thanks. However, I still don't think this is going to help. Your
>> earlier trace experiments showed that the problematic SDMA commands
>> came from the X server, _not_ from plasmashell.
>>
>> So what we see here is likely just the first set of GPU commands sent
>> by plasmashell after the VM fault occurred. Since the plasmashell
>> process is unable to tell who caused the VM fault, it takes the blame
>> incorrectly. Are you sure the X server is using your self-compiled
>> radeonsi_dri.so and has the environment variable set? If it creates a
>> ddebug_dump, it might be somewhere else (it's based off the HOME
>> environment variable, which may be different).
>> I'll take a second look to see if there's an X dump there too, but
>> unfortunately it'll be in about ~8 hours before I have the machine at
>> hand again..
>>
>> And yes, I'm sure, everything is built through portage, so there is no
>> "self-compiled" on the system per se. There's always just one lib
>> available at any time :)
>
> You were right! X didn't have R600_DEBUG=check_vm in environment (no
> login shell/sourcing of /etc/profile).
>
> Here's what i ran:
>
>> $ XAUTHORITY=.Xauthority DISPLAY=:0 LIBGL_DEBUG=verbose dolphin
>> libGL: pci id for fd 9: 1002:9874, driver radeonsi
>> libGL: OpenDriver: trying /usr/lib64/dri/tls/radeonsi_dri.so
>> libGL: OpenDriver: trying /usr/lib64/dri/radeonsi_dri.so
>> si_vm_fault_occured: failed to parse line '                Either
>> enable ECC checking or force module loading by setting
>> 'ecc_enable_override'.
>> '
>> libGL: Using DRI3 for screen 0
>> Trying to convert empty KLocalizedString to QString.
>> Cannot creat accessible child interface for object:
>> PlacesView(0x118d670)  index:  5
>> QPixmap::scaled: Pixmap is a null pixmap
>> QPixmap::scaled: Pixmap is a null pixmap
>> (... etc ...)
>> The X11 connection broke (error 1). Did the X11 server die?
>
> Attaching dmesg and ddebug_dump.
>
> - Mads


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