Messages in this thread | | | Date | Sun, 10 Aug 2008 17:08:59 +0200 | From | Ico Doornekamp <> | Subject | TIOCGWINSZ retuns old pty size after receiving SIGWINCH |
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Hello,
Recently my X terminals showed annoying behaviour where the application in the terminal was not resized properly to the actual size of the X terminal emulator window, resulting in a lot of misaligned text on the screen. Hunting the issue down from the windowmanager and the terminal emulator program, I suspect the problem might lie in the kernel. I'm running 2.6.26 on a dual core i386.
What I see is this: the userspace application receives a SIGWINCH signal and acquires the terminal size usign the TIOCGWINSZ ioctl. It seems that in some cases the old instead of the new terminal size is returned. A small delay before the ioctl seems to 'fix' this behaviour.
I noticed some changes involving locking in the the pty code in the last kernel verions, could one of these changes cause the above behaviour ? If so, wouldn't this affect much more users ?
Ico
-- :wq ^X^Cy^K^X^C^C^C^C
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