Messages in this thread | | | From | Denis Vlasenko <> | Subject | Re: 2.6 much worse than 2.4 on poor wlan reception | Date | Thu, 4 Mar 2004 23:47:52 +0200 |
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On Thursday 04 March 2004 20:01, Thomas Mueller wrote: > I have big problems with kernel 2.6 and WLAN. Quite often the connection > interrupts completely, I can't transfer anything for minutes - making > 2.6 unusable for me :-(
> blade:~# iwconfig eth1 > eth1 IEEE 802.11-DS ESSID:"WLAN" Nickname:"Prism I" > Mode:Managed Frequency:2.412GHz Access Point:00:60:B3:17:F8:8C > Bit Rate:11Mb/s Tx-Power=15 dBm Sensitivity:1/3 > Retry min limit:8 RTS thr:off Fragment thr:off > Encryption key:[ secret ] Security mode:open > Power Management:off > Link Quality:1/92 Signal level:-101 dBm Noise level:-149 dBm
I have Prism 2.5 cards. I run them with hostap driver. Link quality of 1/92 is very bad. You are on the edge of losing connection. (At least this is the case for my hardware).
Let's see how much errors do you have. Do this:
# cat /proc/net/wireless /proc/net/dev
On my system wlan1 has "Link Quality:66/92" (wlan0 is an AP, has no meaningful Link Quality)
Inter-| sta-| Quality | Discarded packets | Missed | WE face | tus | link level noise | nwid crypt frag retry misc | beacon | 16 wlan0: 0000 0 0 0 0 9178 13 23727 142280 0 wlan1: 0000 66. 195. 156. 0 0 0 3422 309008 0
Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed wlan0:1829928225 2539552 0 80689 0 0 0 0 1966341385 2579089 0 42 0 0 0 0 wlan1:143242367 907236 0 0 0 0 0 0 11481487 74357 0 0 0 0 0 0
So, wlan1: 907236 rx packets, 3422 retries (and 309008 packets wasn't for me, wrong MAC, I suppose ;) ) What's your numbers?
> There was a break when netio transfered the 2k blocks. > > My log is full of entries like this one: > Mar 1 17:54:12 blade kernel: eth1: New link status: AP Out of Range > (0004) > Mar 1 17:54:12 blade kernel: eth1: New link status: AP In Range (0005) > Mar 1 17:54:16 blade kernel: eth1: New link status: AP Out of Range > (0004) > Mar 1 17:54:16 blade kernel: eth1: New link status: AP In Range (0005) > Mar 1 17:54:19 blade kernel: eth1: New link status: AP Out of Range > (0004) > Mar 1 17:54:20 blade kernel: eth1: New link status: AP In Range (0005) > Mar 1 17:54:22 blade kernel: eth1: New link status: AP Out of Range > (0004) > > Kernel 2.4 works far better in the poor reception situation I have, > anyone any idea what I could do without moving the AP or laptop? > When I'm near my AP everything works fine with 2.6 too.
Is your orinoco driver is the same for 2.4 and 2.6? Maybe 2.6 one has a bit lower max retry count or some such?
> BTW: removing the PCMCIA card when it's in use freezes my system > completely, that was no problem with 2.4.
No oops? No SysRq? -- vda
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