On Mon, 26 Aug 2013 11:06:52 -0400
Russ H <chairman.fa...@gmail.com> wrote:

> I compiled a vanilla 3.10.8 kernel on my DNS-323 arm box... still getting
> this bug:

Hello,

Did you do a full power-off of your device after running a previous unpatched
version on it? Because as I found out, booting a bugged kernel even once
locks-up the bus "for good" and merely rebooting the DNS-323 doesn't restore
access. Try doing a full power-off including disconnecting the power cord
before trying the new kernel.

(Of course the problem could be something else entirely).

> 
> root@a110755:~# uname -r
> 3.10.8-orion5x
> root@a110755:~# pwmconfig
> # pwmconfig revision 5857 (2010-08-22)
> This program will search your sensors for pulse width modulation (pwm)
> controls, and test each one to see if it controls a fan on
> your motherboard. Note that many motherboards do not have pwm
> circuitry installed, even if your sensor chip supports pwm.
> We will attempt to briefly stop each fan using the pwm controls.
> The program will attempt to restore each fan to full speed
> after testing. However, it is ** very important ** that you
> physically verify that the fans have been to full speed
> after the program has completed.
> Found the following devices:
>    hwmon0/device is g760a
> Found the following PWM controls:
>    hwmon0/device/pwm1
> [  382.279864] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
> [  384.279860] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
> [  386.279861] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
> [  388.279859] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
> Giving the fans some time to reach full speed...
> Found the following fan sensors:
> [  395.349854] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
> [  397.349861] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
> [  399.349853] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
>    hwmon0/device/fan1_input     current speed: 0 ... skipping!
> There are no working fan sensors, all readings are 0.
> Make sure you have a 3-wire fan connected.
> You may also need to increase the fan divisors.
> See doc/fan-divisors for more information.


-- 
With respect,
Roman

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