Excuse the top posting to my original email... Just updated the laptop to Fedora 19, same degraded networking performance. If I switch back to the hard drive with Fedora 17 everything goes back to normal, fast networking. I don't have another network card to test with, but I know the hardware is OK... the only difference is the version of the OS.
________________________________________ From: Miner, Jonathan W (US SSA) Sent: Monday, June 10, 2013 07:46 To: users@lists.fedoraproject.org Subject: RE: Wireless networking degraded with Fedora 18 -----Original Message----- From: Ranjan Maitra [mailto:maitra.mbox.igno...@inbox.com] Sent: Thursday, May 30, 2013 8:36 AM To: Community support for Fedora users Subject: Re: Wireless networking degraded with Fedora 18 On Thu, 30 May 2013 11:24:05 +0000 "Miner, Jonathan W (US SSA)" <jonathan.w.mi...@baesystems.com> wrote: > I have an HP laptop with an integrated Broadcom controller: > > 02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n > Wireless LAN Controller (rev 01) > > I recently upgraded to Fedora 18, and have noticed a big difference between > wireless networking performance. With Fedora 18 running, and sitting about > 10 feet from a Linksys WAP54G access point I get "one bar" on the Gnome > icon... if I double the distance, I start losing the connection. > > If I reboot to Fedora 17, I get three/four bars at 10feet, etc. > > I've checked the internal antenna cables, and made sure that each OS is > running the most up to date kernels. I even used a spectrum analyzer to look > for noise in the 2.4GHz spectrum. I don't have any external USB WiFi adapters > to test with. > > Any ideas? Regardless of the number of bars, is the download speed similar or very different under the two versions? (I ask because there was some talk earlier about the number of bars becoming a more accurate assessment -- I don't know if this has been implemented). Try this (or related sites) to get a reading: https://speakeasy.net/speedtest/ Note that there is, quite naturally, tremendous variability, so you may have to do it a large number of times to get a fair reading under each distribution. I have not myself noticed a difference. HTH somewhat. Ranjan --------------------------------------------------------------------------- I got around to some testing this weekend. Wireless performance with Fedora 18 was averaged 5Mbps, and with Fedora 17 it was 15Mbps. Same laptop, same location... about 10 feet open-air distance between access point and laptop. I may have to try some other distributions on this machine and see what the results are; it's a little disappointing that an upgrade from 17 to 18 would have such a drastic effect... and strange that no one else has reported issues similar to mine. I'll have to dig deeper and start comparing wired-network performance and deeper inspection of the actual packet flow. - Jon -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
