[Bug 591941] Re: SDHC card not recognized

Tue Aug 3 20:23:02 UTC 2010

Robert,

I've seen this issue with all type and sizes.  Aside from the above
stated trick of configuring the kernel with PREEMPT_NONE rather than
PREEMPT_VOLUNTARY, disabling the "CPU Power Management" options
(CONFIG_CPU_FREQ and CONFIG_CPU_IDLE) will also fix the problem.

Experimenting with CONFIG_CPU_IDLE, I noticed the failure comes from
switching the "ladder" to the "menu" governor.  On their own they both
work fine.  The problem happens when the kernel decides to switch to
"menu" after finding the higher rating (20) of the governor.

-- 
SDHC card not recognized
https://bugs.launchpad.net/bugs/591941
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