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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [bdw-u iommu] DMAR error -> GPU hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89360#c118">Comment # 118</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [bdw-u iommu] DMAR error -> GPU hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89360">bug 89360</a>
from <span class="vcard"><a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> <span class="fn">Lakshmi</span></a>
</span></b>
<pre>(In reply to Toroid from <a href="show_bug.cgi?id=89360#c117">comment #117</a>)
<span class="quote">> Hello,
>
> i have
>
> description: Notebook
> product: LIFEBOOK E8420
> vendor: FUJITSU SIEMENS
> version: E84__
> width: 32 bits
> capabilities: smbios-2.4 dmi-2.4
>
> with
>
> 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset
> Integrated Graphics Controller (rev 07) (prog-if 00 [VGA controller])
> Subsystem: Fujitsu Limited. Mobile 4 Series Chipset Integrated Graphics
> Controller
> Flags: bus master, fast devsel, latency 0, IRQ 16
> Memory at f2000000 (64-bit, non-prefetchable) [size=4M]
> Memory at d0000000 (64-bit, prefetchable) [size=256M]
> I/O ports at 1800 [size=8]
> [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
> Capabilities: <access denied>
> Kernel driver in use: i915
> Kernel modules: i915
>
> 00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
> Integrated Graphics Controller (rev 07)
> Subsystem: Fujitsu Limited. Mobile 4 Series Chipset Integrated Graphics
> Controller
> Flags: bus master, fast devsel, latency 0
> Memory at f2400000 (64-bit, non-prefetchable) [size=1M]
> Capabilities: <access denied>
>
>
> running
>
> 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:12 UTC 2019 i686 i686 i686
> GNU/Linux
>
> My System turns reproducable into a piece of brick every 2nd boot when
> switching to inteldrmfb from VESA ?VGA? or so.
> Sometimes the CLI Screen gets a bit cluttered or blacks out or just heats up
> the room.
>
> I also noticed:
> KiCAD schematics gets cluttered with mousecross until refresh.
> I can not use a secondary display by hdmi and xrandr.
>
> I tried to find some loggings but since it happens during bootup i did not
> find anything to investigate further details.
>
> If i can support to investigate / fix the annoying shit please let me know
> what / how to do as i really would like to use my big stationary screen for
> cad.
>
> Sincerely Reiner</span >
Hi, This looks like a different issue than the original bug report. Can you
please verify the issue with drmtip (<a href="https://cgit.freedesktop.org/drm-tip">https://cgit.freedesktop.org/drm-tip</a>).
If the problem persists create a new bug and and attach dmesg log from boot
with kernel parameter drm.debug=0x1e log_buf_len=4M.</pre>
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