Subject : [regression][2.6.38-rcX][net][iwlagn] WiFi signal after period of time tanks causing contant drops Submitter : Shawn Starr <shawn.starr@rogers.com> Date : 2011-02-07 3:54 Message-ID : 613373.34172.qm@smtp106.rog.mail.re2.yahoo.com References : http://marc.info/?l=linux-kernel&m=129705125832718&w=2 This entry is being used for tracking a regression from 2.6.37. Please don't close it until the problem is fixed in the mainline.
I was seeing similar behaviour in -rc3, but not in -rc4. Please have the user try that?
From: Shawn Starr <shawn.starr@rogers.com> (sh0n.net) Date: Thu Feb 10 22:15:29 2011 On Thursday, February 10, 2011 10:07:48 PM Shawn Starr wrote: > On Thursday, February 10, 2011 07:16:24 AM wwguy wrote: > > On Wed, 2011-02-09 at 23:15 -0800, Andrew Morton wrote: > > > (cc linux-wireless) > > > > > > On Sun, 06 Feb 2011 22:54 -0500 Shawn Starr <shawn.starr@rogers.com> > > wrote: > > > > Using a Intel Corporation PRO/Wireless 5100 AGN [Shiloh] card > > > > after > > > > rebooting and a period of of seveal hours signal begins to drop > > > > to > > > > low levels: > > > > > > > > > > > > wlan0 IEEE 802.11abgn ESSID:"XXXXXXXX" > > > > > > > > Mode:Managed Frequency:2.462 GHz Access > > > > Point: > > > > AA:BB:CC:DD:EE:FF Bit Rate=11 Mb/s > > > > Tx-Power=15 dBm > > > > Retry long limit:7 RTS thr:off Fragment > > > > thr:off > > > > Power Management:off > > > > Link Quality=12/70 Signal level=-98 dBm > > > > Rx invalid nwid:0 Rx invalid crypt:0 Rx > > > > invalid frag:0 > > > > Tx excessive retries:0 Invalid misc:35 > > > > Missed > > > > beacon:0 > > > > > > > > ... > > > > > > > > Link Quality=12/70 Signal level=-98 dBm > > > > Rx invalid nwid:0 Rx invalid crypt:0 Rx > > > > invalid frag:0 > > > > Tx excessive retries:0 Invalid misc:40 > > > > Missed > > > > beacon:0 > > > > > > > > I start seeing lots of Invalid misc errors and connection drops. > > > > If > > > > I reboot, then signal will be back to normal for a period of > > > > time > > > > again. > > > > > > > > My official kernel is from Fedora rawhide > > > > (2.6.38-0.rc3.git4.1.fc15.x86_64) > > > > > > > > Anyone else notice poor link/signal levels? > > > > > > > > .37 showed no such issues. > > > > did not see anything special from the log, is any environment or > > condition changed? what AP you are using? > > > > Thanks > > Wey > > I'm using an Linksys WRT54G with tomato firmware for a number of years. The > AP is in my house and very close. I will keep an eye on this. This all > seemed to have started after we had a power outage. The AP is fine however > and I haven't noticed this drop a 2 after. > > If there was any environment changes they appear to have 'settled' down. > > I will be going to 2.6.38-0.rc4.git0.1.fc15 right now and will do another > long hour test by keeping the laptop on for a number of hours on the > weekend. To answer myself, https://bugzilla.kernel.org/show_bug.cgi?id=28832 Looks like this is behavour observed in -rc3 the same period I did the upgrade. I can discount the power outage > > Thanks, > Shawn.
On Saturday, February 19, 2011, Shawn Starr wrote: > On Sunday, February 13, 2011 12:05:21 AM Rafael J. Wysocki wrote: > > This message has been generated automatically as a part of a summary report > > of recent regressions. > > > > The following bug entry is on the current list of known regressions > > from 2.6.37. Please verify if it still should be listed and let the > > tracking team know (either way). > > > > > > I've left laptop on for a day, not seeing this anymore. Please close bug > ticket (but I have another regression coming up in another thread for > something else :/)