Bug 450467
| Summary: | wireless interface won't come up | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Sjoerd Mullender <sjoerd> |
| Component: | kernel | Assignee: | John W. Linville <linville> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | 9 | CC: | kernel-maint |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | 2.6.25.6-57.fc9 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-06-24 13:49:46 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Sjoerd Mullender
2008-06-08 21:34:17 UTC
Please attach the output of running iwconfig just before and just after (if it looks different) running dhcp. Also, please try a later kernel from Koji: http://koji.fedoraproject.org/koji/buildinfo?buildID=51981 There has been lots of iwlwifi activity lately. Does this kernel behave any differently than -30.fc9? (In reply to comment #1) > Please attach the output of running iwconfig just before and just after (if it > looks different) running dhcp. ESSID and key x-ed out, but they were correct for my wireless network. # iwconfig wlan0 wlan0 IEEE 802.11 ESSID:"" Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated Tx-Power=0 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Encryption key:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 # ifup wlan0 Determining IP information for wlan0...PING 192.168.2.1 (192.168.2.1) from 192.168.2.9 wlan0: 56(84) bytes of data. --- 192.168.2.1 ping statistics --- 4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3000ms pipe 3 failed. # iwconfig wlan0 wlan0 IEEE 802.11 ESSID:"xxxxxx" Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated Tx-Power=15 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Encryption key:XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XX Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 # (In reply to comment #2) > Also, please try a later kernel from Koji: > > http://koji.fedoraproject.org/koji/buildinfo?buildID=51981 > > There has been lots of iwlwifi activity lately. Does this kernel behave any > differently than -30.fc9? Same problem with kernel-2.6.25.5-49.fc9.x86_64. The iwconfig output also looks the same. What is the output of 'iwlist wlan0 scan'? Are you detecting the network of interest? Also, do you have a line like this in /etc/modprobe.conf? options iwl4965 disable_hw_scan=1 Does adding/removing it make any difference? # iwlist wlan0 scan
wlan0 Interface doesn't support scanning : Network is down
# ifconfig wlan0 up
# iwlist wlan0 scan
wlan0 Scan completed :
Cell 01 - Address: 00:14:7F:8C:9F:62
...
After the ifconfig up, the iwlist scan gives a list of APs, so scanning seems to
work. My network is also in the list.
After this I tried the ifup wlan0 again, but that resulted in the caps lock and
scroll lock lights flashing and the system completely unresponsive. I had to
hard reboot. After the system was back up I tried the above commands again, but
I didn't get any scan results this time.
All of this still on the -49 kernel from koji.
# grep iwl /etc/modprobe.conf
alias wlan0 iwl4965
So no disable_hw_scan in there.
Please add the disable_hw_scan option to /etc/modprobe.conf and try again. Does it make a difference? This seems to work: # uname -r 2.6.25.4-30.fc9.x86_64 # grep iwl /etc/modprobe.conf alias wlan0 iwl4965 options iwl4965 disable_hw_scan=1 # ifup wlan0 Determining IP information for wlan0... done. # With the latest kernel (kernel-2.6.25.6-55.fc9.x86_64) things have gotten worse. If I now try ifup wlan0, the system hangs completely with the caps lock and scroll lock leds flashing. There is nothing I can do except hold down the power button until the system turns off. I can do things like ifconfig wlan0 up and then iwlist wlan0 scan (which returns a list of APs, although I don't see mine in there--I know my AP works since I can connect to it using another device). The above is with the disable_hw_scan=1 option in modprobe.conf. If I remove the line, ifup wlan0 up doesn't hang the system but merely times out with a "failed" message. The "flashing caps lock" is a different issue. Please try -57.fc9 or later kernels: http://koji.fedoraproject.org/koji/buildinfo?buildID=52456 Without the disable_hw_scan=1 I still get a DHCP timeout, but with that line I now get a working wireless interface: # uname -r 2.6.25.6-57.fc9.x86_64 # grep iwl /etc/modprobe.conf alias wlan0 iwl4965 options iwl4965 disable_hw_scan=1 # ifup wlan0 Determining IP information for wlan0... done. |