Bug#312973: kernel-image-2.6.11-1-686: intel8x0 clock?
Package: kernel-image-2.6.11-1-686
Version: 2.6.11-5
Followup-For: Bug #312973
While scanning /var/log/kern.log I found these lines:
intel8x0_measure_ac97_clock: measured 49946 usecs
intel8x0: clocking to 47473
The values vary. I've seen the following combinations:
measured 49946 / clocking to 47473
measured 49915 / clocking to 47444
measured 49943 / clocking to 47470
measured 49944 / clocking to 47471
If I understand this correctly, it means that something is firing once
per 49946 useconds, and the kernel thinks that it should be firing every
47473 useconds, and so it tries to compensate for it.
All of the above pairs have a ratio of about 1.05, measured to clocked.
This would mean a forward drift of about 3 seconds per minute. Again,
this is assuming that I am reading this message correctly.
I will try to keep a log of the drift and see if it corroborates this
data.
P.S. Is AC'97 a whole motherboard chipset, or only an audio card? If it
is an audio card, this is probably related to sound timing -- if so, it
could be detecting the system drift and thereby correcting the audio
timing, making my MP3s play at normal speed (which I rather enjoy), but
not correcting the system clock problem (which I'd really like fixed).
P.P.S. This should all prove that I know absolutely nothing about the
kernel.
-- System Information:
Debian Release: 3.1
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.11-1-686
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages kernel-image-2.6.11-1-686 depends on:
ii coreutils [fileutils] 5.2.1-2 The GNU core utilities
ii fileutils 5.2.1-2 The GNU file management utilities
ii initrd-tools 0.1.81.1 tools to create initrd image for p
ii module-init-tools 3.2-pre1-2 tools for managing Linux kernel mo
-- no debconf information
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