On Fri, 02 Sep 2022 18:43:29 +0200 Sven Joachim <svenj...@gmx.de> wrote:
> On 2022-09-02 16:47 +0100, Dave Howorth wrote: > > > I'd like to use uvcdynctrl on a bullseye 64-bit system. But > > according to https://packages.debian.org/search?keywords=uvcdynctrl > > the package is not available for any flavour of bullseye. It is > > available for both earlier (stretch and buster) and later (bookworm > > and sid) releases. > > That is true, unfortunately. > > > So I'm curious what the reason is? > > The best way to find out is to visit https://tracker.debian.org/ and > enter the package name (can be a source or binary package). In this > case, this leads to https://tracker.debian.org/pkg/libwebcam where you > should be looking for "REMOVED from testing" links. Ah, OK thanks. I don't pretend to fully understand what is being said in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=733094 but I noticed in post #64 "uvcdynctrl just adds some exotic uvc ctrls for older logitech cameras, like a led ctrl." Unfortunately, that sounds like a precise description of exactly why I need uvcdynctrl. > > And if I could use one of the other versions on my system? I'm sadly > > no expert on forwards and backwards compatibility issues. > > Using an older version is usually possible, but it would expose you to > exactly the same bug that is the reason why the package is not > available in bullseye. I had a buster version that worked perfectly well for years so I don't understand what the problem is/was? > Using newer versions is not recommended, because they depend on > libraries not available on bullseye. You do not want to upgrade to > bookworm's libc6, for instance. > > The best option is often to use a backport[1]. For libwebcam such a > backport has already been prepared by the maintainer, but not been > accepted yet[2]. You would need to either wait for it to become > available or build it yourself, e.g. from the tag in the package's git > repository[3]. I'm happy to build it myself, though I'm not familiar enough with git to be confident of how to get the right version. The word 'tag' doesn't appear on [3] so I'm not sure how to select it? > Cheers, > Sven > > > 1. https://backports.debian.org/ > 2. https://ftp-master.debian.org/new/libwebcam_0.2.5-2~bpo11+1.html > 3. > https://salsa.debian.org/debian/libwebcam/-/tree/debian/0.2.5-2_bpo11+1 >
