Arch Linux

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Tasklist

FS#47619 - [linux] i915 - kernel: BUG: unable to handle kernel NULL pointer dereference at (null)

Attached to Project: Arch Linux
Opened by detrito (detrito) - Monday, 04 January 2016, 18:25 GMT
Last edited by Doug Newgard (Scimmia) - Friday, 05 February 2016, 15:14 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture x86_64
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

step to reproduce:
X freezes and kernel crashes immediately when starting X (with startxfce4) with xf86-video-intel 1:2.99.917+519+g8229390-1 and linux 4.3.3-2.

machine:
thinkpad X240 with 5500 Intel HD graphic card:
# lspci | grep Graph
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)

configuration:
passing the option i915.enable_execlists=0 at boot time (as suggested in the arch-wiki) does not fix it.

fix:
downgrade to linux 4.2.5-1 fix this.

maybe this is a duplicate of https://bbs.archlinux.org/viewtopic.php?id=207114
This task depends upon

Closed by  Doug Newgard (Scimmia)
Friday, 05 February 2016, 15:14 GMT
Reason for closing:  Fixed
Additional comments about closing:  linux 4.4.1-2
Comment by detrito (detrito) - Monday, 04 January 2016, 18:27 GMT
the kernel log
   kernel_panic.txt (10.9 KiB)
Comment by Doug Newgard (Scimmia) - Monday, 04 January 2016, 18:57 GMT
Reporting kernel bugs here isn't going to do much. They need to go upstream.
Comment by detrito (detrito) - Monday, 04 January 2016, 20:01 GMT
Ok, but I'm not sure about who is upstream: linux or xf86-video-intel (xorg)?
Comment by detrito (detrito) - Friday, 05 February 2016, 12:47 GMT
update to kernel 4.4.1-2-ARCH fixed this.

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