Re: 3.7-rc3: mouses stopped working

On Fri, Nov 16, 2012 at 01:37:31PM +0100, Jiri Kosina wrote:

On Fri, 16 Nov 2012, Pavel Machek wrote:

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root@amd:/tmp# uname -a
Linux amd 3.7.0-rc5+ #236 SMP Thu Nov 15 20:07:26 CET 2012 i686 GNU/Linux
root@amd:/tmp# cat /dev/input/mice
cat: /dev/input/mice: No such device or address
root@amd:/tmp# ls -al /dev/input/mice
crw-rw---- 1 root root 13, 63 Apr 25  2010 /dev/input/mice
root@amd:/tmp# 

Let's see whether this is /dev/input/mice issue or something else first.

Is anything coming out of corresponding /dev/input/eventX node?

/dev/input/mouse0 and /dev/input/mouse1 generate events when I move
internal/USB mouse.

ls -al /dev/input/mouse0 
crw-rw---- 1 root root 13, 32 Apr 25  2010 /dev/input/mouse0
pavel@amd:/tmp$ ls -al /dev/input/mouse1
crw------T 1 root root 13, 33 Aug 30 16:41 /dev/input/mouse1
pavel@amd:/tmp$ 

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And /dev/hidrawX?

/dev/hidraw0 seems to correspond to USB mouse and generates
events. Could not find hidraw corresponding to PS/2 mouse.

That is correct and expected behavior.

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So it seems to be "/dev/input/mice" issue. Does it work for you?

Yes, it works for me properly (testing with rc4+, 1b42fc4 more precisely). 
Even after disconnect/reconnect cycle of USB mouse, I am getting events 
properly from /dev/input/mice (frankly I am surprised that you noticed ... 
Xorg has been using evdev driver for ages already by default, right?)

What was the last kernel version that worked for you in this respect?

Adding Dmitry and linux-input.

Does the patch below help?

Thanks.

-- 
Dmitry


Input: mousedev - move /deb/input/mice to teh correct minor

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

When doing conversion to dynamic input numbers I inadvertently moved
/dev/input/mice form c,13,63 to c,13,31. We need to fix this so that
setups with statically populated /dev continue working.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/mousedev.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index 8f02e3d..4c842c3 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c

@@ -12,8 +12,8 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #define MOUSEDEV_MINOR_BASE	32
-#define MOUSEDEV_MINORS		32
-#define MOUSEDEV_MIX		31
+#define MOUSEDEV_MINORS		31
+#define MOUSEDEV_MIX		63
 
 #include <linux/sched.h>
 #include <linux/slab.h>