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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Flickering screen with Intel graphics from specific kernel version onwards (4.2)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106017">106017</a>
</td>
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<tr>
<th>Summary</th>
<td>Flickering screen with Intel graphics from specific kernel version onwards (4.2)
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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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>
<tr>
<th>Reporter</th>
<td>udippel@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>(Cited from
<a href="https://askubuntu.com/questions/927407/flickering-screen-with-intel-graphics-on-ubuntu-17-04">https://askubuntu.com/questions/927407/flickering-screen-with-intel-graphics-on-ubuntu-17-04</a>:)
The screen is flickering, going black for extended periods of time (~10
seconds) as well as "hot pixels" on the home screen and in some applications.
The system is an Intel Skylake integrated graphics (HD 510) with no other
graphics card that could be interfering.
The problem goes away if I either reduce the resolution (to 1080i or lower) or
the refresh rate (from 60Hz to 30Hz).
Summary of things I have (unsuccessfully) tried so far:
creating config script for the X server as suggested, among others, on the Arch
wiki. This seems to be the go to advice for this sort of problem, but
unfortunately it hasn't helped me.
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
Option "DRI" "3"
EndSection
I also tried this with AccelMethod uxa and it didn't help.
Enabling the intel microcode proprietary driver
nomodeset and i915.modeset=0 kernel parameters. This just limits my resolution
to 1024x768 (or maybe it was 1280x1024, but either one isn't satisfactory)
i915.preliminary_hw_support=1, i915.enable_rc6=0, i915.enable_psr=0 kernel
parameters
acpi=off kernel parameter
Upgrading drivers through the Intel graphics update tool as well as from this
website (latest versions at the time of this writing: GuC - Ver 6.1, DMC - Ver
1.26, HuC - Ver 1.07)
Upgrading kernel to 4.11 and 4.12rc5, which has only seemed to make matters
worse
apt-get purge xserver-xorg-video-intel, which hasn't helped, as well as a
reinstall
Installing intel-vaapi-driver (from launchpad)
Different distros (Lubuntu 16.04.2, Lubuntu 17.04, Ubuntu 17.04, Fedora 25),
they all have the same problem. Update: So does the recently released Lubuntu
17.10 (kernel 4.13.0-16)
Increasing the initially allocated memory to 1024MB in the BIOS
Enabling CSM in the BIOS
Setting the intel_iommu kernel parameter to off or igfx_off
Running stock Ubuntu 17.10. I thought maybe it was an X11 issue, and using
Wayland might work. It didn't, although the exact symptoms changed slightly
Replacing the i915.ko file in the kernel's drivers directory with the working
one from the 15.10 install. Somewhat surprisingly, this does not work. I had
been halfway sure it would.
(Cited from <a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1712508">https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1712508</a>:)
I have two Lenovo T410s that I upgraded from 14.04 to 16.04.
Since then, one is working fine while the other shows mainly an ever
disappearing screen and flickering.
I think that I can help with this problem, since my two T410s are identical in
hard- and software, including BIOS, except that one is a type 2924 (with
NVIDIA-card, though disabled in the BIOS), and the other one is a 2904 (without
NVIDIA card).
I have checked for differences at boot time and found DMAR as major difference:
T410s, 2924: [ 0.335616] DMAR: Disabling batched IOTLB flush on Ironlake
T410s, 2904: [ 0.355681] DMAR: BIOS has allocated no shadow GTT; disabling
IOMMU for graphics
The outputs of lspci -k | grep -EA3 'VGA|3D|Display' are identical to the
point.
As requested, the upstream kernel was tried, and exposed the same problem.
Also, with the reinstallation of an older kernel 3.x in that same machine, this
problem does not exist. Therefore it should be considered a regression.</pre>
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