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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - GPU hang resulting in Freeze(?) then unclean logout (possibly connected to LibreOffice)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102433#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - GPU hang resulting in Freeze(?) then unclean logout (possibly connected to LibreOffice)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102433">bug 102433</a>
from <span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span></b>
<pre>(In reply to wettererscheinung from <a href="show_bug.cgi?id=102433#c7">comment #7</a>)
<span class="quote">>...
> * Nonetheless, how do I apply this on grub?</span >
Hello Maria, to apply this execute:
$ sudo nano /etc/default/grub
Add intel_iommu=igfx_off inside the "" after the grub command line, i.e.:
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=igfx_off"
Save and close. Then apply:
$sudo update-grub
And then reboot.
<span class="quote">> * I read that virtualization won't work anymore - is that true?
> (This would be a problem as I do use virtualbox regularly)</span >
You can find more information over the internet:
<a href="https://en.wikipedia.org/wiki/Input%E2%80%93output_memory_management_unit#Virtualization">https://en.wikipedia.org/wiki/Input%E2%80%93output_memory_management_unit#Virtualization</a>
, Virtualization should keep working.
<span class="quote">> * When I understood the info about this feature right you mean that
> possibly the GPU doesn't work correctly with the DMA Re-Mapping?
> Is that an hardware/guarantee issue?</span >
You could do a memtest86 to be sure your memory is working correctly:
On debian, do 'apt install memtest86'. You should see it in the grub options
as a boot target that you can choose.
There is no log. If memtest reports an error, you have to replace your memory.
If it was a DMAR error, that should be follow on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [bdw-u iommu] DMAR error -> GPU hang"
href="show_bug.cgi?id=89360">bug 89360</a>.
<span class="quote">> Bytheway I experience two kinds of occurances: 1 - freeze, then logout;
> 2 - total freeze, no change, only poweroff helps therefore no error
> report possible</span >
Those could be different issues, though you would need to identify a patron to
determine if they should be worked separately.
<span class="quote">> Yours
> Maria</span >
>From error state:
ERROR: 0x00000000
FAULT_TLB_DATA: 0x0000001b 0xaacb0b2b
Address 0x0000baacb0b2b000 GGTT
DONE_REG: 0x07ffffff
render command stream:
START: 0x00011000
HEAD: 0xf9001d80 [0x00001d28]
head = 0x00001d80, wraps = 1992
TAIL: 0x00001da8 [0x00001d80, 0x00001da8]
CTL: 0x00003001
len=16384, enabled
MODE: 0x00000000
HWS: 0xfffe8000
ACTHD: 0x00000000 f9001d80
at ring: 0x00000000
IPEIR: 0x00000000
IPEHR: 0x7a000004
INSTDONE: 0xffdfffff
busy: CS
SC_INSTDONE: 0xfffffbff
SAMPLER_INSTDONE[0][0]: 0xffffffff
SAMPLER_INSTDONE[0][1]: 0xffffffff
SAMPLER_INSTDONE[0][2]: 0xffffffff
ROW_INSTDONE[0][0]: 0xfffffffd
ROW_INSTDONE[0][1]: 0xfffffffd
ROW_INSTDONE[0][2]: 0xfffffffd
batch: [0x00000000_044a6000, 0x00000000_044ae000]
BBADDR: 0x00000000_044a631c
BB_STATE: 0x00000020
INSTPS: 0x00008980
INSTPM: 0x00000000
FADDR: 0x00000000 00012da8
RC PSMI: 0x00000010
FAULT_REG: 0x00000000
SYNC_0: 0x00000000
SYNC_1: 0x00000000
SYNC_2: 0x00000000
GFX_MODE: 0x00008000
PDP0: 0x000000041915e000
PDP1: 0x0000000000000000
PDP2: 0x0000000000000000
PDP3: 0x0000000000000000
seqno: 0x002e45d4
last_seqno: 0x002e45d6
waiting: yes
ring->head: 0x00001d00
ring->tail: 0x00001da8
hangcheck stall: yes
hangcheck action: dead
hangcheck action timestamp: 4331761496, 122744 ms ago
ELSP[0]: pid 1042, ban score 0, seqno 2:002e45d5, emitted 123896ms
ago, head 00001d28, tail 00001da8
ELSP[1]: pid 1904, ban score 0, seqno a:002e45d6, emitted 123896ms
ago, head 00001c10, tail 00001c88
Active context: Xorg[1042] user_handle 1 hw_id 2, ban score 0 guilty 0 active
0</pre>
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