gregoa's blog: kernel & cpu

gregoa's blog
random musings about computers, life, and everything

2008-08-01 01:30:39 +0200

kernel & cpu

I've upgraded the kernel on both my laptop (on tuesday) & my laptop (today) to 2.6.26; no problems so far, the extra modules built & the kernels run. — ath5k is still not working with my wifi chip (AR5212, cf. ~~#463425~~, although the errors look slightly different [0]; let's wait until 2.6.26-686 hits unstable). on other news: cpu frequency scaling seems to finally work on my laptop (thinkpad R60e with a Intel(R) Celeron(R) M CPU 420 @ 1.60GHz cpu); the trick was to set the minimal frequency explicitly to 400 khz (200 would be the lowest value).

# cat /etc/modules
..
p4-clockmod
cpufreq_ondemand

# cat /etc/sysfs.conf
..
devices/system/cpu/cpu0/cpufreq/scaling_governor = ondemand
devices/system/cpu/cpu0/cpufreq/scaling_min_freq = 399999

updates:

I have strange network problems here at DebCamp with 2.6.26 & madwifi, fortunately I still have some other kernels installed :)
ath5k still doesn't work with linux-image-2.6.26-1-686 from unstable.

update:
w00t! ath5k works with linux-image-2.6.26-1-686 2.6.26-2!
but I still have massive packet loss wih both madwifi and ath5k here at DebConf. — & also here some days later at "Hostal Sebas" in BsAs.

[0]

# grep ath5k /var/log/syslog.0
Jul 30 00:36:09 nerys kernel: [  320.450984] ath5k_pci 0000:03:00.0: registered as 'phy0'
Jul 30 00:36:09 nerys kernel: [  321.121107] ath5k phy0: Atheros AR5424 chip found (MAC: 0xa3, PHY: 0x61)
Jul 30 00:36:22 nerys kernel: [  333.513763] ath5k phy0: noise floor calibration timeout (2412MHz)
Jul 30 00:36:22 nerys kernel: [  333.513794] ath5k phy0: can't reset hardware (-11)
Jul 30 00:36:38 nerys kernel: [  349.655496] ath5k phy0: noise floor calibration timeout (2412MHz)
Jul 30 00:36:38 nerys kernel: [  349.655525] ath5k phy0: ath5k_chan_set: unable to reset channel (2412 Mhz)
Jul 30 00:36:42 nerys kernel: [  353.004057] ath5k phy0: noise floor calibration timeout (2412MHz)
Jul 30 00:36:44 nerys kernel: [  355.314594] ath5k phy0: noise floor calibration timeout (2417MHz)

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