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alienjon
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 Posted: Mon Jul 14, 2008 1:48 am Post subject: Need to run disable_hw_scan=1 to use wlan0 [solved] |
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The computer is a Toshiba Satellite A305 laptop with a Intel Corporation PRO/Wireless 3945ABG Network Connection wireless device (that's the lspci output) I followed some wiki's and forums and was able to configure the kernel appropriately, but it still was not working. I was, however, able to find a hack to get it to work. I found that if I run my wlan0 init script and then run the following code, it can connect to my router and, subsequently, the internet:
| Code: | modprobe -r iwl3945
modprobe iwl3945 disable_hw_scan=1 |
Apparently, by disabling hardware scanning, it'll work just fine, but a) I don't know if there's a way to specify this every time the module loads (right now I have it in a small script I run whenever I start the computer) or better yet if b) there is a way to disable this in the kernel (or as the module is built).
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He who laughs last, laughs hardest
He who laughs hardest has milk come out of his nose
He who has milk come out of his nose gets laughed at
Can you see the catch 22 here?
Last edited by alienjon on Tue Jul 15, 2008 10:18 pm; edited 1 time in total |
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codergeek42
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| Posted: Mon Jul 14, 2008 5:13 am Post subject: |
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If it's built into your kernel statically, you can add it as a boot-time parameter such as 'iwl3945.disable_hw_scan=1'. (This would be appended to your "kernel /bzImage-version" line in your Grub config file.)
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Who am I? :: EFF & FSF |
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alienjon
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| Posted: Mon Jul 14, 2008 5:15 am Post subject: |
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naw, it's a module (unless I'm misinterpreting what you mean by 'static')
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He who laughs last, laughs hardest
He who laughs hardest has milk come out of his nose
He who has milk come out of his nose gets laughed at
Can you see the catch 22 here? |
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codergeek42
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| Posted: Mon Jul 14, 2008 5:21 am Post subject: |
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| alienjon wrote: | | naw, it's a module (unless I'm misinterpreting what you mean by 'static') |
OOOH. I think I see what you're saying.
If you want to add this as a permanent option for the module, you can use the /etc/modprobe.conf file. | Code: | # /etc/modprobe.conf
options iwl3945 disable_hw_scan=1 |
Its syntax for the options is very similar to that of modprobe directly, and is explained in the modprobe.conf(5) man page if you're further interested: | Code: | | $ man modprobe.conf |
This will cause these options to be used every time the module is loaded, without having to explicitly run "modprobe iwl3945 disable_hw_scan=1 other_option=foo" etc. 
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swimmer
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| Posted: Mon Jul 14, 2008 10:11 am Post subject: |
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Hmm - I don't trust that solution completely since I read this on the top of /etc/modprobe.conf
| Code: | ### This file is automatically generated by update-modules
#
# Please do not edit this file directly. If you want to change or add
# anything please take a look at the files in /etc/modprobe.d and read
# the manpage for update-modules(8). |
I'd suggest creating a file iwl3945 in /etc/modprobe.d/ with the line codergeek42 suggested ...
Sorry codergeek42 
Greetz
swimmer |
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codergeek42
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| Posted: Tue Jul 15, 2008 4:59 am Post subject: |
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| swimmer wrote: | [...] creating a file iwl3945 in /etc/modprobe.d/ with the line codergeek42 suggested ...
Sorry codergeek42 |
Heh; That's my "not used Gentoo in 2+ years" solution, so I appreciate your correction. Thanks.
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~~ Peter: Brony, GNU/Linux geek, caffeine addict, and Free Software advocate.
Who am I? :: EFF & FSF |
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alienjon
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| Posted: Tue Jul 15, 2008 2:36 pm Post subject: |
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I just added that line to /etc/modules.d/iwl3945 and upon rebooting I had the exact same problem (and again, reloading the module fixes it). Interestingly, though, is that I now see that line in the /etc/modules.conf file. I'm guessing that the modules.conf file loads the options from the modules.d sub-files. But now, I'm wondering, if the problem lays in that the module needs to be reloaded anyway for it to work?
_________________
He who laughs last, laughs hardest
He who laughs hardest has milk come out of his nose
He who has milk come out of his nose gets laughed at
Can you see the catch 22 here? |
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swimmer
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| Posted: Tue Jul 15, 2008 10:13 pm Post subject: |
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*** /me crashes his head against the table ***
I should have told you that you have to run after that :-/
Sorry about that 
swimmer |
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alienjon
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| Posted: Tue Jul 15, 2008 10:17 pm Post subject: |
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Thanks
I actually just finished rebooting after working on another problem and noticed that it's working fine now (actually, it was a second reboot, so I'm not sure why it didn't work the first time, but oh well, it's good now) Thanks for the help
_________________
He who laughs last, laughs hardest
He who laughs hardest has milk come out of his nose
He who has milk come out of his nose gets laughed at
Can you see the catch 22 here? |
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swimmer
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| Posted: Tue Jul 15, 2008 10:37 pm Post subject: |
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Glad to hear that it works now  |
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