On Mon, Jun 20, 2016 at 2:32 PM, Arun Khan <[email protected]> wrote: > On Mon, May 2, 2016 at 11:49 PM, W. Michael Petullo <[email protected]> wrote: >>> The situation is much worse now. "rescan" does not show any AP. >>> >>> I put in a cron entry to reboot the RasPi every 2 hours, it worked for >>> a day or two. Today even a reboot would not restore the WiFi >>> connection. I just shut the unit OFF! >>> >>> As mentioned in my OP, the USB WiFi dongle is "Realtek Semiconductor >>> Corp. RTL8188CUS >>> 802.11n WLAN Adapter" >>> >>> Any pointers where to start looking would be much appreciated. >> >> Have you looked at this: >> >> >> https://lists.openwrt.org/pipermail/openwrt-devel/2015-October/036677.html >> >> ? >> >> Bruno subsequently proposed a rtl8xxxu patch which replaces the driver >> in question. I do not know if OpenWrt has yet accepted the patch. My >> hardware became reliable after manually applying the patch and rebuilding >> the kernel. >> >> I am not sure if your hardware uses the same driver as mine. > > First I'll try a good PSU.
Replaced the PSU with a Samsung OEM unit rated for 5V/2A DC output. I have also added an external USB HUB (power from RasPi) and added another USB dongle (same chip set). Indeed the RasPi is now working like a charm. > I'll look into the alternate rtl8xxxu > patch if performance continues to be flaky. Performance of RTL8192 driver is still flaky. WiFi networking goes downhill over a period of time. I read through the thread Michael posted and also found this change request <https://dev.openwrt.org/changeset/48104> Unfortunately, I don't have the expertise to build the module for the RasPI target. I am reading up on building single opkg. <https://wiki.openwrt.org/doc/devel/packages> If there in an rtl8xxx opkg for 15.05 please let me know. <workaround> Luckily the RasPi boots in under 30 seconds. I have set up a cron job to reboot it every 4 hours which brings back the WiFi network connectivity. </workaround> Thanks for your tips Tom and Michael. -- Arun Khan _______________________________________________ openwrt-users mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-users
