Description of problem: Wireless internet is compared to Windows 7 slow or almost not usable (timeouts, page not accessible) Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. Start Fedora 15 2. Start Chrome dev. 3. Actual results: very slow with Acer 721 one; Firefox is a little faster almost unusable with desktop computer with wlan usb (D-Link DWA-160); connection stops and reconnects but is still slow; same result with Firefox 4 Expected results: same speed as with Windows 7 (my internet cable dsl Upload 5000 Kbit/s, Download 50000 Kbit/s) Additional info: No problem with Fedora 14 Autoconnect to wlan doesn't work with Fedora 15 and the Acer 721 one Wi-Fi Standard IEEE 802.11 n
That is probably a driver issue. Please, report: 1. your kernel version 2. nm-tool output 3. dmesg 4. iwevent output when connecting/connected Also look at /var/log/messages whether the connection is stable or periodically disconnects/reconnects. Is it an issue only with 802.11n or with 802.11bg as well?
Created attachment 495619 [details] dmesg
Comment on attachment 495619 [details] dmesg 2.6.38.3-18.fc15.x86_64
Created attachment 495620 [details] nm-tool
Created attachment 495621 [details] iwevent
acer one 721 according to Windows 7: AR5B93 But Linux: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01) 06:00.0 Network controller [0280]: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) [168c:002a] (rev 01) Subsystem: Foxconn International, Inc. Device [105b:e01f] Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at d0300000 (64-bit, non-prefetchable) [size=64K] Capabilities: [40] Power Management version 2 Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [60] Express Legacy Endpoint, MSI 00 Capabilities: [90] MSI-X: Enable- Count=1 Masked- Capabilities: [100] Advanced Error Reporting Capabilities: [140] Virtual Channel Capabilities: [160] Device Serial Number 00-00-00-00-00-00-00-00 Kernel driver in use: ath9k Kernel modules: ath9k same problem with USB DWA-160: 802.11n-WLAN-Modul Realtek RTL8191SU. It is so slow that I can't use it.
It appears to be a regression in ath9k driver in kernel 2.6.38. It's been fixed in 2.6.39, I think. You can try a workaround: # rmmod ath9k # modprobe ath9k nohwcrypt=1 Kernel upstream bug: https://bugzilla.kernel.org/show_bug.cgi?id=31452 Other bugs: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/761176 https://bugs.launchpad.net/archlinux/+source/linux/+bug/735171 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=622753
the workaround seems to work for the pci-express; not for the USB DWA-160 from D-Link.(In reply to comment #7) > It appears to be a regression in ath9k driver in kernel 2.6.38. It's been fixed > in 2.6.39, I think. > > You can try a workaround: > # rmmod ath9k > # modprobe ath9k nohwcrypt=1 > > Kernel upstream bug: > https://bugzilla.kernel.org/show_bug.cgi?id=31452 > > Other bugs: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/761176 > https://bugs.launchpad.net/archlinux/+source/linux/+bug/735171 > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=622753
*** Bug 699224 has been marked as a duplicate of this bug. ***
looks like the requested patch has already been applied to the 2.6.38-5 kernel
*** Bug 682561 has been marked as a duplicate of this bug. ***