I am using Ubuntu 11.10. My wireless connections drops 10-20 minutes after I start my computer. It keeps searching for wireless after that but does not find it.
The same issue does not occur if I use Windows. I tried to use the solutions of Wireless connection keeps dropping with an Intel 3945ABG card but it did not work. For example, I could not find /iwl3945.conf file in /etc/modprobe.d folder. Also, the "sudo iwconfig wlan0 power off" command did not help me either.
Here are more details of my network:
sudo lshw -C network:
PCI (sysfs) *-network description: Wireless interface product: RTL8191SEvB Wireless LAN Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 10 serial: f0:7b:cb:a3:99:90 width: 32 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtl8192se driverversion=3.0.0-12-generic firmware=N/A ip=172.31.51.68 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn resources: irq:17 ioport:2000(size=256) memory:f0600000-f0603fff
sudo lsmod | grep iwl:
iwl3945 73329 0 iwl_legacy 71499 1 iwl3945 mac80211 272785 2 iwl3945,iwl_legacy cfg80211 172392 3 iwl3945,iwl_legacy,mac80211
Any suggestion will be very appreciated.