[Bug 445852] Re: SSD stall during boot

Andrew Simpson andrew.simpson at paradise.net.nz
Mon Nov 9 08:46:18 UTC 2009


Playing with LiveCD (on a USB stick) with an Aspire One with Super
Talent 16Gb SSD:

- Normal LiveCD boot shows the problem in dmesg.

- Booting with 'libata.dma=0' in kernel line fixes the problem (by
disabling DMA) in dmesg.

- Booting with 'libata.ignore_hpa=0' had no affect.

Since the problem looked to be DMA related, I tried slowing down the
transfer with 'libata.force=udma/33'.  No affect, though plenty of logs
about UDMA being forced to 33.

The same machine is working fine with Jaunty.  Another Aspire One with
the standard (factory) 8 Gb SSD is running Karmic without any problem.

-- 
SSD stall during boot
https://bugs.launchpad.net/bugs/445852
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