XO-1.75 - Kernel news

Saadia Husain Baloch saadia at laptop.org
Sat Mar 10 23:28:52 EST 2012

Our emails crossed, and I would like to warn people that I experienced some
questionable results with just be20def applied, after my machine got a
corruption of the mmc "EXT4-fs (mmcblk0p2): group descriptors corrupted!" which
stops the machine from booting. I have never had this before, and the
kernel I am using is the head of arm-3.0-ramp with just this one
mcam-core.c patch applied.
Other than the corruption the crash still happens for me on two machines.

On Sat, Mar 10, 2012 at 10:46 PM, Martin Langhoff <martin at laptop.org> wrote:

> The very latest kernel for XO-1.75 11.3.x builds, which you can get
> with yum update (and then follow
> http://wiki.laptop.org/go/Kernel#Installing_kernel_RPMs ) is very
> interesting.
> Please update to it and let us know how it fares for you!
> What's interesting?
> = be20def marvell-cam: ensure that the camera stops when requested
> Opening Record and recording many videos or many audio files does not
> end up in a hard freeze (#11657). At least not for me, helps us
> corroborate.
> There are still some oddities when using Record, but those may be
> different (lesser) bugs. For example, the camera will sometimes get a
> green snapshot for the audio recording.
> = 4ae137c libertas: drop commands if the libertas host is asleep
> Using aggressive suspend/resume (Control Panel > Power > Automatic
> power management) no longer leads to hangs in busy wireless networks
> (#11658). At least not for me, help us corroborate.
> On Friday, I left one XO with 4ae137c with powerd configured to sleep
> after 2s of idle, and a second XO pinging it every 5. Checked them in
> the office earlier, and both were still going at it.
> Grepping the log of the ping sender, it had >18K successful pings, and
> 127 failures. Not perfect, but not a bad ratio either.
> cheers,
> m
> --
>  martin at laptop.org -- Software Architect - OLPC
>  - ask interesting questions
>  - don't get distracted with shiny stuff  - working code first
>  - http://wiki.laptop.org/go/User:Martinlanghoff
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