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PostPosted: Thu Feb 17, 2011 9:15 pm 
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Joined: Sun Nov 20, 2005 7:40 pm
Posts: 51
Hi,

since upgrading to Squeeze I can't control the fan anymore by calling "echo -n '\\\\' > /dev/ttyS0", and - even more important - I can't shutdown the LS2 anymore. The power button has no effect (besides powering on the LS2). And though avr_evtd is not running, the LS2 doesn't power off automatically like it did when there was no evtd coming up within 60seconds after boot.

It seems as if /dev/ttyS0 doesn't work anymore. It was working under Debian Lenny with the same kernel: 2.6.30.5.

Any ideas?

P.S.: I already tried /dev/ttyS1, but get an "input/output error". And I'm sure that the LS2 has always been using ttyS0.


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PostPosted: Sun Feb 20, 2011 3:50 pm 
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Joined: Tue Aug 24, 2010 7:25 pm
Posts: 10
I have that issue, too.

Serial control port /dev/ttyS0 works in Foonas-EM, but not in davy gravy's kernel 2.6.30.5 or in ramp's kernel 2.6.32.16. On some kernels, echoing the special codes to the serial port has no effect.

The shutdown sequence for halting would probably work out better (currently does not power off).

According to 'fuser', avr-evtd attaches to /dev/ttyS1, but 'echoing' to that device produces an error.

'setserial -g' reports

/dev/ttyS0, UART: 16550A, Port: 0x0000, IRQ: 104
/dev/ttyS1, UART: unknown, Port: 0x0000, IRQ: 0

I am not sure how the daemon does its job, anyway. I cannot recall the device rebooting itself except under openlink in 2006.

Felix


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