Red Hat Bugzilla – Bug 426066
Kernel hang until keypress during boot
Last modified: 2009-07-14 11:40:38 EDT
Description of problem:
Occasionally when rebooting the machine will hang part way through the boot
until I press a key.
Version-Release number of selected component (if applicable):
Though I have seen this happen on earlier kernels including some from Fedora 7.
This happens very roughly about 20% of the time when booting on one machine.
Steps to Reproduce:
System hangs until a key is pressed after the line:
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
After hitting a key the next line displayed starts with "Clocksource".
No hang during the reboot.
This doesn't happen on another machine I run Fedora 8 on.
Created attachment 289852 [details]
Created attachment 289853 [details]
Should be fixed in 184.108.40.206-85 or higher.
I'll keep an eye on it. I recently went to 220.127.116.11-85.fc8 and thought I saw the
problem again yesterday. I noticed that I had another line about the serial
device that wasn't there when I wrote things down for the bug report.
If I confirm that it is still happening with this kernel I'll update the bug.
Because of another kernel bug, I end up rebooting that machine pretty often
(every couple of days) to recover from IO hangs.
It did reoccur today with kernel 18.104.22.168-85.fc8, so it looks like there is
still an issue.
I saw it again on 22.214.171.124-107.fc8.
I am going to try to upgrade this machine to Rawhide. If that works I won't have
an easy way to test 2.6.23 kernels any more, but I'll report back if I see the
problem with 2.6.24 kernels or if it doesn't happen again for a long time.
I saw it again on 2.6.25-0.65.rc2.git7.fc9.
I haven't seen this is a while now. Since it wasn't happening very often before,
I don't want to declare it fixed, just give you an update of what I haven't been
I had this (a hang until keypress) with 126.96.36.199-86.fc9.i686.
I had this happen twice in a row with 188.8.131.52-108.fc9.i686. In the first case where it was over 12 hours before I had physical access to the machine, hitting keys did not continue the boot. On the next try, where it also hung, hitting a key did continue the boot process.
I have retired the machine that was doing this (at work) and no longer have access to the hardware to do further testing.
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