Notes on installing FC5 and ipw3945 wireless driver on Samsung Q35 Notebook
andy at warmcat.com
Thu Apr 27 09:23:54 UTC 2006
Mike Cohler wrote:
> Having spent some time in the past week installing FC5 and getting the new-ish
> ipw3945 wireless interface running on a Samsung Q35 notebook, I though it might
> be a good idea to put some notes onto a web page in case anyone else is
> struggling to get (particularly) the wireless interface up and running.
> Anyway these notes are now at http://www-users.york.ac.uk/~mdc1/samsung.html and
> if there is any feedback/query please do it via this list.
Hi Mike -
I have one of these beasties now, here are some additional notes. I
appreciated your original documentation and advise so maybe some of this
can help yourself or someone else.
Suspend works most of the time, it requires Ctrl-Alt-F1 and then
Ctrl-Alt-F7 to get video back. Hibernate proceeds correctly, but on
reboot the hibernation data is ignored and it boots as if from cold.
By default the audio does not work well. There is a high frequency tone
while the audio is active and changing mixer settings while audio active
destroys audio until next boot. I updated to the latest Alsa drivers,
and added the following to /etc/modprobe.conf
options snd-hda-intel index=0 single_cmd=1 model=laptop-eapd
On reboot sound is great. There does not seem to be an internal mic but
the external mic jack also works after this. I don't know if the alsa
upgrade was necessary because I found this solution after it.
WPA/WPA2 can be made to work using wpa_supplicant. I got it working
first by hand, then discovered the wpa_supplicant already existed in FC5
as a service with integration into ifup and ifdown, so chkconfig
wpa_supplicant on will help. TKIP support has a problem, I found
setting my wireless router to WPA2 AES avoided the problem. Wireless is
then very solid.
When setting your WPA key, note you have to encode the key first using
wpa_passphrase before sticking it in /etc/wpa_supplicant/wpa_supplicant.conf
wpa-supplicant needs to be told the ipw3945 device is to be communicated
with using -D wext protocol.
I can't get NetworkManager to recognize that wlan0 exists as an
interface, despite that system-config-networking knows about it.
I killed tap to click on the synaptics touchpad by adding
Option "SHMConfig" "yes"
Option "MaxTapTime" "0"
to the Input Device / Synaptics part of /etc/X11/xorg.conf
I was only able to get vesa xorg support to work so far, but you can
select 1280x800 layout after setting a generic LCD monitor of 1280x800
resolution. This is the main deficit left now, no xv.
In general it was pretty encouraging. The chipset in the laptop is very
new but everything works to a greater or lesser extent, most of it to
the greater extent. In a way that makes a new rod for Fedora's back
because it is so close to perfect that the remaining annoyances are
correspondingly more annoying...
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