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Showing posts from December, 2012

Problem setting up HP LaserJet P1102 on Linux

If you have problem setting up driver for HP LaserJet P1102, it most probably because of Smart Install feature of the device. You can see it in dmesg output:


[353279.710023] usb 6-1: new high-speed USB device number 22 using ehci_hcd
[353279.824940] usb 6-1: New USB device found, idVendor=03f0, idProduct=002a
[353279.824944] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[353279.824947] usb 6-1: Product: HP LaserJet Professional P1102
[353279.824950] usb 6-1: Manufacturer: Hewlett-Packard
[353279.824952] usb 6-1: SerialNumber: 000000000Q84CF03SI1c
[353279.826253] scsi16 : usb-storage 6-1:1.0
[353280.838094] scsi 16:0:0:0: CD-ROM            HP       Smart Install    1.0  PQ: 0 ANSI: 2
[353280.868209] sr1: scsi3-mmc drive: 0x/0x caddy
[353280.868365] sr 16:0:0:0: Attached scsi CD-ROM sr1
[353280.868452] sr 16:0:0:0: Attached scsi generic sg2 type 5

it is useful for Windows users as it will create a virtual cdrom drive in order to install the printer's driver. For …

Postfix: smtp_address_preference

For mailserver/system  administrator :

If your mailserver has problem to connect to ipv6 address (especially if your mailserver doesn't support it) and throw errors something like this:
Dec 10 00:05:57 localhost postfix/smtp[16925]: connect to mta7.am0.yahoodns.net[2404:160:0:f:0:2:42c4:7621]:25: Network is unreachable
Dec 10 00:05:57 localhost postfix/smtp[16925]: connect to mta6.am0.yahoodns.net[2404:160:0:f:0:1:6288:d9ca]:25: Network is unreachable
Dec 10 00:05:57 localhost postfix/smtp[16925]: connect to mta7.am0.yahoodns.net[2404:160:0:f:0:2:42c4:7624]:25: Network is unreachable
Dec 10 00:05:57 localhost postfix/smtp[16925]: connect to mta6.am0.yahoodns.net[2404:160:0:f:0:1:43c3:a8e6]:25: Network is unreachable
Dec 10 00:05:57 localhost postfix/smtp[16925]: connect to mta6.am0.yahoodns.net[2404:160:0:f:0:1:42c4:7622]:25: Network is unreachable
then you may want to check the default smtp_address_preference parameter in main.cf. Most probably it is defaulted to ipv6 which is true o…