urtwn device timeout
Hi, I have occasional device timeout from urtwn on my ThinkPad T440 with usb wifi dongle. All I get in dmesg is: urtwn0: device timeout ifconfig still shows it as associated: urtwn0: flags=28c43UP,BROADCAST,RUNNING,OACTIVE,SIMPLEX,MULTICAST,NOINET6 mtu 1500 lladdr 6c:19:8f:b3:98:02 priority: 4 groups: wlan egress media: IEEE802.11 autoselect (OFDM54 mode 11g) status: active ieee80211: nwid somessid chan 6 bssid 24:a4:3c:65:ca:f7 180dB wpakey not displayed wpaprotos wpa1,wpa2 wpaakms psk wpaciphers tkip,ccmp wpagroupcipher tkip inet 10.90.7.15 netmask 0xff80 broadcast 10.90.7.127 I can ping local IP address, but nothing else. Little blue light on the adapter is on during times of outage. netstart restores the connection for a few seconds, after which it drops again. Re-inserting usb dongle followed by netstart re-estabilishes connection for a longer period. I noticed that dongle was quite hot when I removed it. I don't know if it is related, but I had similar problem with integrated wifi adapter on linux with iwlwifi driver. It would wander off to AP with worse signal, or just stop transmitting. I'd have to turn adapter off and on in order to restore the connection. Any good people out there to help me out with this? -- Marko Cupać https://www.mimar.rs/
Re: urtwn device timeout
On Wed, Dec 17, 2014 at 12:39:15PM +0100, Marko Cupać wrote: Hi, I have occasional device timeout from urtwn on my ThinkPad T440 with usb wifi dongle. All I get in dmesg is: urtwn0: device timeout Yes, these devices tend to run hot and stop working. I have a urtwn(4) device that has the same problem. No fix is known. It's possible that powersaving is required for these devices to work reliably, which I don't think our urtwn(4) driver has support for. Someone with the necessary patience could try adding support for it. The Linux rtlwifi driver seems to support powersaving for this device.
Re: urtwn device timeout
Stefan Sperling writes: On Wed, Dec 17, 2014 at 12:39:15PM +0100, Marko Cupać wrote: Hi, I have occasional device timeout from urtwn on my ThinkPad T440 with usb wifi dongle. All I get in dmesg is: urtwn0: device timeout Yes, these devices tend to run hot and stop working. I have a urtwn(4) device that has the same problem. No fix is known. It's possible that powersaving is required for these devices to work reliably, which I don't think our urtwn(4) driver has support for. Someone with the necessary patience could try adding support for it. The Linux rtlwifi driver seems to support powersaving for this device. If it's a heat thing, they sure seem to heat up faster with xhci enabled. I get an occasional timeout without xhci and about one every 5 to 10 minutes with it enabled. --
Re: urtwn device timeout
Marko Cupa?? marko.cu...@mimar.rs wrote: Hi, I have occasional device timeout from urtwn on my ThinkPad T440 with usb wifi dongle. All I get in dmesg is: urtwn0: device timeout ifconfig still shows it as associated: urtwn0: flags=28c43UP,BROADCAST,RUNNING,OACTIVE,SIMPLEX,MULTICAST,NOINET6 mtu 1500 lladdr 6c:19:8f:b3:98:02 priority: 4 groups: wlan egress media: IEEE802.11 autoselect (OFDM54 mode 11g) status: active ieee80211: nwid somessid chan 6 bssid 24:a4:3c:65:ca:f7 180dB wpakey not displayed wpaprotos wpa1,wpa2 wpaakms psk wpaciphers tkip,ccmp wpagroupcipher tkip inet 10.90.7.15 netmask 0xff80 broadcast 10.90.7.127 I can ping local IP address, but nothing else. Little blue light on the adapter is on during times of outage. netstart restores the connection for a few seconds, after which it drops again. Re-inserting usb dongle followed by netstart re-estabilishes connection for a longer period. I noticed that dongle was quite hot when I removed it. I don't know if it is related, but I had similar problem with integrated wifi adapter on linux with iwlwifi driver. It would wander off to AP with worse signal, or just stop transmitting. I'd have to turn adapter off and on in order to restore the connection. Any good people out there to help me out with this? -- Marko Cupa?? https://www.mimar.rs/ I have the same problem with 5.6 on a ThinkPad x120e but not with -current on a MacBook. I thought it had gotten better and that was that, but the other replies here indicate that xhci makes it worse. -- Martin
