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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [i915] fastboot=1 results in blank screen (no lockup)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108672">108672</a>
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<th>Summary</th>
<td>[i915] fastboot=1 results in blank screen (no lockup)
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>grawity@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>Booting my Dell Inspiron with 'i915.fastboot=1' still results in flicker during
load, and more importantly, completely blank screen afterwards.
Perhaps similar to <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [i915/HSW] fastboot causing blank screen and kernel lockup"
href="show_bug.cgi?id=104838">bug 104838</a> but in my case the kernel *does not* lock up; I
can still blindly run commands. So here's dmesg output after booting into
emergency mode and running `modprobe i915`:
[ 67.947553] Linux agpgart interface v0.103
[ 68.092857] VFIO - User Level meta-driver version: 0.3
[ 68.237788] checking generic (c0000000 408000) vs hw (c0000000 10000000)
[ 68.237789] fb: switching to inteldrmfb from EFI VGA
[ 68.237806] Console: switching to colour dummy device 80x25
[ 68.237873] [drm] Replacing VGA console driver
[ 68.238868] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 68.238869] [drm] Driver supports precise vblank timestamp query.
[ 68.239226] i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 68.249512] [drm] Initialized i915 1.6.0 20180719 for 0000:00:02.0 on minor
0
[ 68.250556] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 68.250772] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:01/input/input10
[ 68.253438] fbcon: inteldrmfb (fb0) is primary device
[ 68.267489] Console: switching to colour frame buffer device 170x48
[ 68.276041] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
Software: linux 4.19.1-arch1-1, linux-firmware 20181026.1cb4e51-1 (Arch Linux)
Hardware: Dell Inspiron 5547 (UEFI; fw ver. A10), internal eDP connection
according to xrandr.
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT
Integrated Graphics Controller [8086:0a16] (rev 0b)
03:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Topaz
XT [Radeon R7 M260/M265 / M340/M360 / M440/M445] [1002:6900]</pre>
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