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Date: Fri, 16 May 2008 14:57:24 -0700 (PDT)
From: maxim wexler <blissfix@yahoo.com>
Subject: Re: [gentoo-user] ttyS0 conflict was UPS recommendation
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> Thanks for your exhaustive replies. I've decided to go
> for the APC ES-350 for seventy bucks at the local Staples.
been following this page:
http://gentoo-wiki.com/HOWTO_APCUPSD
Kernel seems to have all the right stuff...
heathen@localhost ~ $ emerge -pv apcupsd
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild R ] sys-power/apcupsd-3.12.4 USE="ncurses usb -cgi -doc -nls -snmp -threads -vhosts" 0 kB
#rc-update add apcupsd default. So far so good.
$cat /proc/bus/usb/devices
<...>
T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 2 Spd=1.5 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=051d ProdID=0002 Rev= 1.06
S: Manufacturer=APC
S: Product=Back-UPS ES 350 FW:823.B1.D USB FW:B1
S: SerialNumber=3B0742X02836
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid
E: Ad=81(I) Atr=03(Int.) MxPS= 6 Ivl=10ms
<...>
But when I try dialup I get this:
Device ttyS0 is blocked by PID 3981
which turns out is apcupsd. So I have to kill it before I can dial out.
Sure enough, in the conf file there is this: DEVICE /dev/ttyS0.
Which makes me wonder why it needs /dev/ttyS0? I'm using an external USR modem which uses ttyS0.
If I don't need to protect a fax-machine why do I need that phone line connector in the back of the UPS device anyway? When the power goes I don't care if the modem dies.
Can I just tell it to use one of these other /dev/ttyS*? If I comment out that DEVICE line will the thing still protect my PC?
heathen@localhost ~ $ ls /dev/ttyS*
/dev/ttyS0 /dev/ttyS1 /dev/ttyS2 /dev/ttyS3
Maxim
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