Date: Mon, 23 Dec 2013 01:47:04 +0100 From: Mark Martinec <Mark.Martinec+freebsd@ijs.si> To: freebsd-stable@freebsd.org Subject: Graphical console in stable/10 stuck on heavy writing Message-ID: <52B78808.1090802@ijs.si>
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FreeBSD amd64, recent stable/10: When running some task on a graphical console window and that task writes lots of output to a console, the console gets stuck after some time (like 20 minutes), output stops, keyboard appears unresponsive, alt-ctrl-Fn is unable to switch consoles - but the machine seems otherwise sane: I can log in over ssh, file system and processes are healthy, CPU not busy. This was first noticed trying to rebuild kde from ports in a console window. Same happened when bulk updating packages from a remote site and the pkg update was busily writing its output to a console. The same heavy tasks (e.g. ports rebuild) can run just fine in an ssh session, or in a konsole / xterm. As a final proof, I tried a perl one-liner which writes a line (a count and some text) ten times per second: it manages to screw up the console window in about 6 minutes. Interestingly, while the console output is stuck and I blindly type a command on a keyboard (no echo), then run a shutdown from another (ssh) session, the console output gets unstuck during shutdown, rapidly displays the missing lines, including the echo of a command typed blindly previously, along with its output. Btw, this never happened on this machine while it was running 9.2 or older versions. Anybody seen this or can reproduce it? Mark
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