Red Hat Bugzilla – Bug 370891
long delay (50 seconds) while kernel boots
Last modified: 2007-12-30 12:03:58 EST
Description of problem:
There's a long delay when the kernel starts. Without 'quiet', kernel messages
can be seen:
agpgart: Detected VIA KT400/KT400A/KT600 chipset
agpgart: AGP aperture is 128M @ 0xd8000000
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
--> HERE, nothing happens for about 50 seconds
Switched to high resolution mode on CPU 0
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
After that, system comes up normally.
Version-Release number of selected component:
Happens on every boot.
Mainboard: EPoX EP-8KRA-2+ with VIA KT600 chipset
CPU: AMD Athlon XP 2600+
The delay wasn't there with f7 and earlier kernels.
should fix this. See https://fedoraproject.org/wiki/KernelCommonProblems
(In reply to comment #1)
> should fix this. See https://fedoraproject.org/wiki/KernelCommonProblems
This indeed eliminates the delay.
Are there any drawbacks changing the clocksource? The doc doesn't say whether
there are e.g. differences in accuracy, and which one to chose best.
Seems per comment #2 that this is no longer an issue. Please confirm...
I'm reviewing this bug as part of the kernel bug triage project, an attempt to
isolate current bugs in the Fedora kernel.
I am CC'ing myself to this bug and will try and assist you in resolving it if I can.
There hasn't been much activity on this bug for a while. Could you tell me if
you are still having problems with the latest kernel?
If the problem no longer exists then please close this bug or I'll do so in a
few days if there is no additional information lodged.
(In reply to comment #3)
> Seems per comment #2 that this is no longer an issue. Please confirm...
The delay is still there with kernel-126.96.36.199-85.fc8.i686, but not when
clocksource=acpi_pm is set. Didn't try other clocksources.
So, this bug can be closed.
However, such problems should probably be detected during installation and the
kernel commandline be adjusted automatically.