sabato 7 febbraio 2009

eeepc 904 HA problemi scheda wifi

installando ubuntu 8.10 sul piccolo eeepc 904 ha si va incontro al mancato riconoscimento della scheda wifi del portatile il modello installato è il seguente:


Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01)

per risolvere questo inconveniente, seguite questi consigli:

disabilitate il riconoscimento automatico della scheda wifi, cliccate su sistema-amministrazione-driver hardware disabilitate il riconoscimento della scheda atheros cliccate sulla pallina verde.

installate i moduli backports.

sudo apt-get install linux-backports-modules-intrepid

mettete in blacklist i moduli ath_pci e ath_hal

sudo gedit /etc/modprobe.d/blacklist

# This file lists those modules which we don't want to be loaded by
# alias expansion, usually so some other driver will be loaded for the
# device instead.

# evbug is a debug tool that should be loaded explicitly
blacklist evbug

# these drivers are very simple, the HID drivers are usually preferred
blacklist usbmouse
blacklist usbkbd

# replaced by e100
blacklist eepro100

# replaced by tulip
blacklist de4x5

# causes no end of confusion by creating unexpected network interfaces
blacklist eth1394

# snd_intel8x0m can interfere with snd_intel8x0, doesn't seem to support much
# hardware on its own (Ubuntu bug #2011, #6810)
blacklist snd_intel8x0m

# Conflicts with dvb driver (which is better for handling this device)
blacklist snd_aw2

# causes failure to suspend on HP compaq nc6000 (Ubuntu: #10306)
blacklist i2c_i801

# replaced by p54pci
blacklist prism54

# replaced by b43 and ssb.
blacklist bcm43xx

# most apps now use garmin usb driver directly (Ubuntu: #114565)
blacklist garmin_gps

# replaced by asus-laptop (Ubuntu: #184721)
blacklist asus_acpi

# low-quality, just noise when being used for sound playback, causes
# hangs at desktop session start (Ubuntu: #246969)
blacklist snd_pcsp
# driver madwifi atheros
blacklist ath_pci
blacklist ath_hal


riavviate il pc al prossimo avvio la scheda verrà perfettamente riconosciuta.

il modulo del kernel utilizzato da ubuntu per il riconoscimento della scheda wifi sarà ath5k per verificare vi basterà dare da terminale lsmod.