If you tried to install any distribution which uses Debian-Installer (Debian, Ubuntu and derivatives) using my method for booting multiple CDs from a USB stick (with ext2 partitions) (see also the version with FAT16 partitions, you most likely encountered the error “No common CD-ROM drive was detected.” immediatly after the “Detecting hardware to find CD-ROM drives” screen.
Săptămâna trecută am instalat forțat pachete în confict pe unul din serverele Debian, iar în week-end a trebuit să rulez script-urile de backup și apoi upgrade. Care proces de upgrade a eșuat în felul următor:
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Am avut de curând nevoie să instalez două pachete care sunt în conflict. Mai exact, voiam să folosesc serverele de POP3 și IMAP din Dovecot, dar foloseam deja XMail pentru SMTP. Și cum XMail are și el server POP3 inclus, a rezultat un conflict de toată frumusețea între xmail și dovecot-pop3d. A trebuit deci să găsesc un workaround/hack pentru a permite instalarea simultană a celor două pachete.
The UPSes from Inform are pretty decent and cheap. They even come with Linux, BSD and Unix drivers. The Linux ones – at least – don’t work, though. I bough a Guard LCD 1000 VA and played with it a little until I made it work with my Debian server.
The shipped drivers are garbage – however, the UPS works perfectly with Network UPS Tools (nut in Debian), with the driver megatec. Here is the magic to include in /etc/nut/ups.conf:
[InformGuardLCD] driver = megatec port = /dev/ttyS0 desc = "My UPS"
To check that it works, you should run upsdrvctl -DDDDD start and watch what happens. You should also try to plug out the UPS from the power socket to force it to go to batteries.
If everything is ok, the rest of the config is pretty straightforward, nut has working samples. After you start the daemons, you can check the UPS status with upsc InformGuardLCD.
Enjoy 
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