Hello Raspberians, finally the raspi is working absolutely rock solid stable with LinkUSB and on latest wheezy libraries and firmware!
The situation: Once in a while the raspi pi showed Errors in log: smsc95xx 1-1.1:1.0: eth0: Failed to read register index 0x00000114 (hours to days, that did depend...) and sometimes it completely hung itself up. There is a lot to read about those kind of problems. It is not completely clear if this is hardware, firmware, power-supply or what. Some people report, it appeared in the recent Software-version only. After tinkering a while with various approaches, this is what did it for me: 1. disabling eth0 2. use powered USB-hub for LinkUSB and WiFi-adapter 3. add some more parameters to /boot/cmdline.txt 1. disabling eth0 by removing the module during boot up, like described here http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=8670&p=146633&hilit=disable+ethernet go down to Robpol86 ยป Thu Jul 19, 2012 7:18 am there is a script to automatically disable eth0 during boot. 2. Then I did use a USB-hub, that is in the list of verified peripherals: http://elinux.org/RPi_VerifiedPeripherals#Working_USB_Hubs Digitus 7-port USB2.0 Powered Hub. Model DA-70226. and of course I need network connection! Again refer to the verified peripherals list: http://elinux.org/RPi_VerifiedPeripherals#Working_USB_Wifi_Adapters Netgear N150 (I have the micro-adapter version) (lsusb reports as ID 0846:9041 NetGear, Inc. WNA1000M 802.11bgn [Realtek RTL8188CUS]) 3. added the following to /boot/cmdline.txt dwc_otg.microframe_schedule=1 dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait smsc95xx.turbo_mode=N Things I did that didn't solve the problem but some made it better and some might be even needed anyway to get to a stable running raspi: - update to latest firmware using Hexxeh's firmware-updater here: https://github.com/Hexxeh/rpi-update - solder a shortcut over the two polyfuses (thanks, Patryk!): http://raspi.tv/tag/shorting-polyfuses-on-raspberry-pi - reducing the speed of eth0 with cmdline.txt added smsc95xx.turbo_mode=N - unplugging network cable - measuring the voltage at TP's to ensure high enought voltage on the raspi - changing power-supply to a PC-power-supply at the moment, I do use the raspi as intended for my heating controller for the house, so I cannot experiment further. I am glad it is stable now! Feel free to ask questions, Cheers, Martin ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
