Re: How do I update Ericsson F5521gw firmware from Linux? / Ericsson F5521gw Random Disconnect Issue
From: Dan Williams <hidden>
Date: 2014-12-03 21:29:28
On Wed, 2014-12-03 at 10:58 +0000, Richard Yao wrote:
I purchased an Ericsson F5521gw (Lenovo part 60Y3279) so that my Lenovo T520 could connect to China Unicom for internet access during a stay in China. Unfortunately, it tends to fail every 4 to 8 hours with the following printed to the system log:
Probably a better discussion for the ModemManager list (since that's what you're using) but here goes... As far as I know, there is no way to do this from Linux unless you install Windows into a VM and use USB passthrough to allow the VM direct access to the Ericsson device's USB interfaces. I'm not sure what version of NetworkManager you're running, but NM 0.9.10+ have WWAN autoconnect support which will reconnect periodically on failure. That coupled with setting your openvpn VPN connection as a "secondary connection" to the WWAN should ensure that the VPN is always up when the WWAN is up. That would be a good workaround if you cannot find a way to update the firmware. nmcli con mod "China Unicom" connection.autoconnect yes nmcli con <find your VPN connection's name or UUID> nmcli con mod "China Unicom" +connection.secondaries <VPN name or UUID> (this does require that your VPN passwords be stored in /etc/NetworkManager/system-connections/, but rest assured they are only accessible by root) Dan
Dec 3 04:28:27 t520 kernel: [85827.909187] cdc_ncm 2-1.4:1.6 wwan0: network connection: disconnected Dec 3 04:28:27 t520 NetworkManager[4134]: <info> (ttyACM1): modem state changed, 'connected' --> 'registered' (reason: user-requested) Dec 3 04:28:27 t520 NetworkManager[4134]: <info> (ttyACM1): device state change: activated -> failed (reason 'modem-no-carrier') [100 120 25] Dec 3 04:28:27 t520 NetworkManager[4134]: <info> NetworkManager state is now CONNECTED_LOCAL Dec 3 04:28:27 t520 NetworkManager[4134]: <info> NetworkManager state is now CONNECTED_GLOBAL Dec 3 04:28:27 t520 NetworkManager[4134]: <info> Policy set 'tun0' (tun0) as default for IPv4 routing and DNS. Dec 3 04:28:27 t520 dbus[3912]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper) Dec 3 04:28:27 t520 nm-openvpn[4200]: MANAGEMENT: Client disconnected Dec 3 04:28:27 t520 nm-openvpn[4200]: SIGTERM received, sending exit notification to peer Dec 3 04:28:27 t520 NetworkManager[4134]: <info> (tun0): link disconnected (deferring action for 4 seconds) Dec 3 04:28:27 t520 NetworkManager[4134]: <error> [1417598907.695056] [platform/nm-linux-platform.c:1714] add_object(): Netlink error adding 0.0.0.0/0 via 10.8.0.5 dev tun0 metric 1024 mss 0 src user: Unspecific failure Dec 3 04:28:27 t520 NetworkManager[4134]: <error> [1417598907.695124] [platform/nm-linux-platform.c:1714] add_object(): Netlink error adding 10.8.0.5/32 via 0.0.0.0 dev tun0 metric 1024 mss 0 src user: Unspecific failure Dec 3 04:28:27 t520 NetworkManager[4134]: <error> [1417598907.695165] [platform/nm-linux-platform.c:1714] add_object(): Netlink error adding 0.0.0.0/0 via 10.8.0.5 dev tun0 metric 1024 mss 0 src user: Unspecific failure tail: /var/log/messages: file truncated Dec 3 04:28:27 t520 NetworkManager[4134]: <error> [1417598907.695165] [platform/nm-linux-platform.c:1714] add_object(): Netlink error adding 0.0.0.0/0 via 10.8.0.5 dev tun0 metric 1024 mss 0 src user: Unspecific failure Dec 3 04:28:27 t520 NetworkManager[4134]: <error> [1417598907.695187] [nm-policy.c:693] update_ip4_routing(): Failed to set default route. Dec 3 04:28:27 t520 NetworkManager[4134]: <warn> Activation (ttyACM1) failed for connection 'China Unicom' Dec 3 04:28:27 t520 NetworkManager[4134]: <info> (ttyACM1): device state change: failed -> disconnected (reason 'none') [120 30 0] Dec 3 04:28:27 t520 NetworkManager[4134]: <info> (ttyACM1): deactivating device (reason 'none') [0] Dec 3 04:28:27 t520 dbus[3912]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Dec 3 04:28:27 t520 nm-dispatcher: Dispatching action 'vpn-down' for tun0 Dec 3 04:28:27 t520 nm-dispatcher: Dispatching action 'down' for wwan0 Here is the modem's description of itself: mmcli -m 0 --command='AT*EEVINFO=99' response: '*EEVINFO: Model.................... F5521gw IMEI Data................ <REDACTED> SVN...................... 05 Serial Number............ <REDACTED> Product Number........... KRD 131 18/221 Revision................. R1C FW Product............... CXP 901 7640/1 FW Version............... R2A07 FW Build Date/Time....... 2010-12-03/12:17 Cust. Product............ CXC 173 0424/22 Cust. Version............ R1B02 Customization Descr...... Lenovo Format................... 1 Base Product Number...... 1/KRD 131 18/1 Base Product Revision.... R1N SIMLock Deployment....... 0.0 SIMLock Description...... Unlocked SIMLock Product.......... CXC 173 0839/01 SIMLock Revision......... R1F Model Description........ F5521gw Mobile Broadband Module Vendor Name.............. Lenovo Config. Set Product...... CXP 901 7629/1 Config. Set Revision..... R3A02 Network Customization.... Default;46001 Customization State...... 0 Configuration Product.... CXP 901 7640/1 Configuration Revision... R2A07 Protocol FW Product...... CXC 173 0063/1 Protocol FW Version...... R2A07 Application FW Product... CXC 173 0064/1 Application FW Version... R2A07 Network List Product..... CXC 173 1116/1 Network List Revision.... R1A Individualization........ 189.191 Domain................... 3.3 Upgrade State............ 1 Volume info.............. 66 MB total / 43.9% free' Posts on the Lenovo forums suggest that this can be resolved by updating the firmware: http://forums.lenovo.com/t5/X-Series-Tablet-ThinkPad-Laptops/Ericsson-F5521gw-WWAN-disconnects-intermittently-and-cannot/td-p/565597 Unfortunately, the official firmware updater only runs on Windows and I am unable to find a way to update the firmware from Linux. I also cannot find any hardware documentation. Does anyone have any suggestions? -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html