Re: udev: what does it used for in Debian?
>>>>> Neil Williams <firstname.lastname@example.org> writes:
>>>>> On Mon, 24 Oct 2011 18:19:08 +0700 Ivan Shmakov wrote:
>> I've found that a few packages, contrary to my expectations, have
>> Depends: on udev. I'm primarily concerned with alsa-base and
>> initramfs-tools, but also wonder about libcomedi0, dkopp,
>> python-expeyes, libnjb5, media-player-info, pulseaudio, ukopp,
>> xserver-xorg-core, and midisport-firmware.
>> The backstory is that I'm about to install Debian (either stable or
>> testing) on a tiny Architecture: i386 system, and consider excluding
>> udev from the installation, as the hardware in question has
>> virtually no support for any pluggable devices whatsoever.
> udev isn't just for pluggable devices, packages can provide udev
> rules to ensure that devices appear with a consistent name,
It doesn't seem like a good reason for the aforementioned
dependency, does it?
And what the initramfs-tools package has to do with consistent
> e.g. /dev/input/event[0-9] does not include only pluggable or
> external devices, it can contain several internal input devices as
> HIDs but the actual number is not predictable. To make sure the
> package reads from the correct device, it is wiser to provide a udev
> rule which gives a particularly identified input device (by
> classification / type / interface or even vendor) a known /dev
> location as a name or symlink.
Somehow, I assume that given a relatively small number of
devices per bus, this wasn't a problem, say, a decade or so ago.
(Think of, say, 2 IDE or floppy drives per IDE or FDD
controller, one keyboard, one PS/2 mouse, two RS-232 ports per
UART, etc.) Or was it rather that there was much less variation
between different instances Intel-based computers' hardware?
However, I wonder, how often these numbers will change given
that the system's hardware configuration will essentially be
fixed for all the foreseeable future? I guess it won't be
something like “every (other) kernel's release”, right?
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