Bug 43123
Summary: | centrino: Wifi Networking is intermittent at best. | ||
---|---|---|---|
Product: | Drivers | Reporter: | Christopher Phelps (arrogantpenguin) |
Component: | network-wireless | Assignee: | drivers_network-wireless (drivers_network-wireless) |
Status: | CLOSED OBSOLETE | ||
Severity: | blocking | CC: | alan, ilw, joshg, linville, natty_brew, simon.strandman |
Priority: | P1 | ||
Hardware: | All | ||
OS: | Linux | ||
Kernel Version: | 3.5 | Subsystem: | |
Regression: | Yes | Bisected commit-id: | |
Attachments: | lshw on the box |
Description
Christopher Phelps
2012-04-19 00:59:40 UTC
What hardware are you using? What is the earliest kernel that displays the problem? And the latest that does not have the problem? Have you done a git bisect of the issue? Created attachment 72982 [details]
lshw on the box
Attached my hardware list (via lshw) Earliest kernel where I have experienced this is 3.2 the latest that I have not seen it is 3.0 (didn't test 3.1), I dont know how to do a git bisect. I concur/have same issue.. Xubuntu 12.04.. running 3.2.. generic-pae now.. Same intermittent wifi.. As described.. description: Wireless interface product: Centrino Ultimate-N 6300 vendor: Intel Corporation I confirm this extremely annoying behavior as well - sometimes will stay connected, usually will not. Sometimes will drop instantly, other times after five minutes. - happens on all public wifi systems I have used, open and password protected - I have never had a problem with my home network (router= 2Wire, 2701HG-B) - seems to correlate with signal strength, meaning the times when I can maintain a signal are when I'm in a high strength area. However, signal drops in places where there is plenty of signal (i.e. other laptops are just fine) - when a signal is dropped I usually cannot reconnect without restarting network-manager - it seems like bringing down eth0 helps establish a connection (even though it will be dropped) but this could be more superstitious than anything at this point. Kernel: 3.2.0-31-generic OS: Ubuntu 12.04 Laptop model: 2012 Thinkpad x220t wireless card: Centrino Ultimate-N 6300 lspci -vv -s 03:00.0 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 3e) Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 45 Region 0: Memory at f2400000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: iwlwifi Kernel modules: iwlwifi modinfo iwlwifi alias: iwlagn license: GPL author: Copyright(c) 2003-2011 Intel Corporation <ilw@linux.intel.com> version: in-tree: description: Intel(R) Wireless WiFi Link AGN driver for Linux firmware: iwlwifi-5150-2.ucode firmware: iwlwifi-5000-5.ucode firmware: iwlwifi-6000g2b-6.ucode firmware: iwlwifi-6000g2a-5.ucode firmware: iwlwifi-6050-5.ucode firmware: iwlwifi-6000-4.ucode firmware: iwlwifi-100-5.ucode firmware: iwlwifi-1000-5.ucode firmware: iwlwifi-135-6.ucode firmware: iwlwifi-105-6.ucode firmware: iwlwifi-2030-6.ucode firmware: iwlwifi-2000-6.ucode srcversion: 2EA00FA7EBFF006707244AA I have the same problem on Ubuntu 12.10 (3.5 kernel). Wifi works for a while but suddenly it just stops working. NetworkManager looks like it's connected with good signal strength but the network doesn't work at all. If I disconnect and reconnect to the AP I just get a message that it couldn't connect and a prompt to enter the password. It works again for a while after a reboot or a sleep/resume cycle (perhaps turning off/on the adapter will work to). This is really annoying of course. I will try with kernel 3.6 from kernel.org now but I guess that wont make a difference. The hardware is a intel centrino wireless-n 6230. Is this still an issue? |