[lkml]   [2005]   [Aug]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] to drivers/input/evdev.c to add mixer device "/dev/input/events"
On 8/15/05, Joe Peterson <> wrote:
> So, overall, I agree that we should not invent hacks to make up for
> another software package's problems, but perhaps input devices,
> especially ones that sometimes are not there at boot or not there all
> the time, should be treated in a way that lets programs stay ignorant of
> the intermittent nature of the devices. It does not sound right to push
> the handling of the intermittent nature to each user program. If the
> kernel could handle that aspect, it would make all programs more stable.
> And most of those "plug and unplug" events, even if handled by X or
> other programs, would really be unnecessary in most cases. In the case
> of a touchscreen, there is no need for X to know it switched off and
> back on again - it just needs to keep listening for touch events. For X
> to be "hotplug aware" in this sense only adds complication, I would
> think. At least if there were a mode in the device/hotplug/udev stuff
> to make a "permanent" device (from boot, and always), you could spare
> the program all of that.

Vojtech is right. The problem is in X and should not be fixed in the
kernel. You need to complain about this on the Xorg lists.

In your example you missed the case of someone having X running and
they plug in a new device that X has never seen before. The Linux
kernel has a hotplug system that tracks all of these plug in/out
events. The problem is that X is not using the hotplug system when it
should. X could even track your display being open/closed if it was
listening to the hotplug events.

The xorg evdev input driver is here:

Jon Smirl
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-08-15 22:27    [W:0.056 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site