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Bug#921418: Kernel update from 4.18 to 4.19 breaks vlc (update)

From Hartmut Buhrmester <debian-bugreports-vcjc@hartmut-buhrmester.de>
Newsgroups linux.debian.bugs.dist
Subject Bug#921418: Kernel update from 4.18 to 4.19 breaks vlc (update)
Date 2019-02-16 12:50 +0100
Message-ID <xs6DN-8mb-27@gated-at.bofh.it> (permalink)
References <xo5mW-58S-23@gated-at.bofh.it>
Organization linux.* mail to news gateway

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The latest kernel update for stretch-backports seems to solve the 
problems with vlc. This update was on Thu, Feb 14 2019. The logfile 
/var/log/aptitude says:

> Aptitude 0.8.7: log report
> Thu, Feb 14 2019 03:41:42 +0100
> 
>   IMPORTANT: this log only lists intended actions; actions which fail
>   due to dpkg problems may not be completed.
> 
> Will install 4 packages, and remove 0 packages.
> 151 MB of disk space will be used
> ========================================
> [HOLD, DEPENDENCIES] manpages-de:i386 2.9-1~bpo9+1
> [INSTALL, DEPENDENCIES] apparmor:i386 2.11.0-3+deb9u2
> [INSTALL, DEPENDENCIES] libapparmor-perl:i386 2.11.0-3+deb9u2
> [INSTALL, DEPENDENCIES] linux-image-4.19.0-0.bpo.2-686-pae:i386 4.19.16-1~bpo9+1
> [UPGRADE] linux-image-686-pae:i386 4.19+101~bpo9+1 -> 4.19+102~bpo9+1
> ========================================
> 
> Log complete.


Then we may update the results table to:

Kernel     4.9.130  4.18.20  4.19.12        4.19.16
------     -------  -------  -------        -------
vlc-3.0.3  okay     okay     program_hangs  okay
vlc-3.0.6  okay     okay     program_hangs  okay


The tested kernels are:

package-version                     kernel-version
---------------                     --------------
linux-image-4.9.0-8-686-pae         4.9.130-2
linux-image-4.18.0-0.bpo.3-686-pae  4.18.20-2~bpo9+1
linux-image-4.19.0-0.bpo.1-686-pae  4.19.12-1~bpo9+1
linux-image-4.19.0-0.bpo.2-686-pae  4.19.16-1~bpo9+1

These packages are referenced by a meta-package linux-image-686-pae, 
which still has a different numbering scheme.


I don't know, what caused the problems with vlc, or what solved them in 
the end. I suspected at some point, that there might be changes to the 
"radeon" driver, but there are no obvious changes to "radeon" between 
kernel 4.19.12 and 4.19.16. So it might be a side effect of something 
completely different.

I learned, that old package versions can be found at 
https://snapshot.debian.org/ , if others like to repeat these tests.


Regards,
Hartmut Buhrmester

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Bug#921418: Kernel update from 4.18 to 4.19 breaks vlc (update) Hartmut Buhrmester <debian-bugreports-vcjc@hartmut-buhrmester.de> - 2019-02-16 12:50 +0100

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