proces blocking on nonblocking io in 2.2.x

Robert Boermans (boermans@cs.utwente.nl)
Tue, 9 Feb 1999 13:45:22 +0100


When i start X on a 2.2.x kernel (including 2.2.2-pre2) it will hang after a
short while and continue when i move the mouse. X stays in
fail_down_interruptable until the mouse is moved.
I saw the same behaviour in another program, stracing that showed
/dev/mouse (symlink to /dev/ttyS1) was opened nonblocking, and at the point
where the program hangs it is doing a read on the mouse fd.

I have a serial mouse, and it works fine in 2.1.132

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