Bug#823156: linux-image-4.5.0-0.bpo.1-amd64: Backport Kernel breaks kwin (FATAL ERROR, while trying to open display)

[Ben Hutchings <ben@decadent.org.uk>]

Control: reopen -1
Control: tag -1 moreinfo

On Mon, 2016-05-02 at 16:38 +0200, Maria wrote:
> thanks to your kind hints how to gather the information I was able to
> fill this out with more information.

Thank you for responding.

> Actually I have to correct my information in the original post: It was
> not Linux Mint which managed to use WLAN (it actually didn't).
> It was the new Kubuntu 16-04 which managed to use WLAN. I didn't use it
> as other things where too much of a mess. I tried so much Distros these
> two days I must have mixed it up - sorry.
> So here is the additional information.
> 
> For more Information about my Kernelmessages please have a look at the
> attached Textfiles.
> 
> Thanks alot for your kind work - Maria
> 
> 
> -- Package-specific info:
> ** Version:
> Linux version 4.5.0-0.bpo.1-amd64 (debian-kernel@lists.debian.org) (gcc
> version 4.9.2 (Debian 4.9.2-10) ) #1 SMP Debian 4.5.1-1~bpo8+1 (2016-04-20)
> 
> ** Command line:
> BOOT_IMAGE=/vmlinuz-4.5.0-0.bpo.1-amd64 root=/dev/mapper/sda3--vg-root
> ro quiet
> 
> ** Tainted: E (8192)
>  * Unsigned module has been loaded (currently expected).
> 
> ** Kernel log:
> [   25.990301] Bluetooth: hci0: Secure boot is enabled
> [   25.990302] Bluetooth: hci0: OTP lock is enabled
> [   25.990303] Bluetooth: hci0: API lock is enabled
> [   25.990305] Bluetooth: hci0: Debug lock is disabled
> [   25.990306] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
> [   25.990321] bluetooth hci0: firmware: failed to load
> intel/ibt-11-5.sfi (-2)
> [   25.990325] bluetooth hci0: Direct firmware load for
> intel/ibt-11-5.sfi failed with error -2
> [   25.990327] Bluetooth: hci0: Failed to load Intel firmware file (-2)
> [   25.991879] uvcvideo: Found UVC 1.00 device Integrated Camera (5986:0706)
> [   25.998348] Intel(R) Wireless WiFi driver for Linux
> [   25.998351] Copyright(c) 2003- 2015 Intel Corporation
> [   25.998689] iwlwifi 0000:04:00.0: enabling device (0000 -> 0002)
[...]
> [   26.000969] iwlwifi 0000:04:00.0: no suitable firmware found!

So WLAN does not work because the firmware is not available.

And these error messages:

> [   25.965566] i915 0000:00:02.0: firmware: failed to load i915/skl_dmc_ver1.bin (-2)
> [   25.965571] i915 0000:00:02.0: Direct firmware load for i915/skl_dmc_ver1.bin failed with error -2

suggest that kwin does not start because the firmware for the GPU is
not available.

I suspect that the sound chip may also require firmware loaded from
disk.

I think that with firmware-intel-sound, firmware-iwlwifi and firmware-
misc-nonfree installed (all of which are in the non-free section of the
archive), this computer will be fully functional.  Let us know whether
that helps.

Ben.

-- 
Ben Hutchings
Life is what happens to you while you're busy making other plans.
                                                               - John Lennon

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