To make my workaround permanent, I tried adding the following lines to /etc/network/interfaces:
auto eth0 iface eth0 inet dhcp Weirdly, this hosed my system to the point it could no longer boot to login screen. It got totaly stuck at configuring eth0 (no matter if the cable was connected or not). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1689261 Title: Network manager says my USB-based ethernet devices are not supported, though I can connect manually Status in network-manager package in Ubuntu: New Bug description: I have a Dell Precision 5520 laptop with a Thunderbolt USB 3.1 type C port that I connect to a Dell TB15 docking station connected with an Ethernet cable. Network manager section for ethernet connections is all grayed out, and it says "device unsupported". USB subsystem seems to detect the device just fine: ``` $ lsusb Bus 004 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. Bus 004 Device 002: ID 0424:5537 Standard Microsystems Corp. Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 004: ID 046d:c31f Logitech, Inc. Bus 003 Device 003: ID 0bda:4014 Realtek Semiconductor Corp. Bus 003 Device 002: ID 0424:2137 Standard Microsystems Corp. Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bus 001 Device 002: ID 046d:c52f Logitech, Inc. Unifying Receiver Bus 001 Device 004: ID 1bcf:2b95 Sunplus Innovation Technology Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ``` ``` $ sudo lsusb -v -d 0bda:8153 Bus 004 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 3.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 9 idVendor 0x0bda Realtek Semiconductor Corp. idProduct 0x8153 bcdDevice 30.01 iManufacturer 1 Realtek iProduct 2 USB 10/100/1000 LAN iSerial 6 000001000000 bNumConfigurations 2 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 57 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 64mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 255 Vendor Specific Subclass bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 3 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 3 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0002 1x 2 bytes bInterval 8 bMaxBurst 0 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 98 bNumInterfaces 2 bConfigurationValue 2 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 64mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 2 Communications bInterfaceSubClass 6 Ethernet Networking bInterfaceProtocol 0 iInterface 5 CDC Communications Control CDC Header: bcdCDC 1.10 CDC Union: bMasterInterface 0 bSlaveInterface 1 CDC Ethernet: iMacAddress 3 D481D773B38D bmEthernetStatistics 0x00000000 wMaxSegmentSize 1514 wNumberMCFilters 0x0000 bNumberPowerFilters 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 8 bMaxBurst 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 Unused bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 2 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 Unused bInterfaceProtocol 0 iInterface 4 Ethernet Data Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 3 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 3 Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 22 bNumDeviceCaps 2 USB 2.0 Extension Device Capability: bLength 7 bDescriptorType 16 bDevCapabilityType 2 bmAttributes 0x00000002 Link Power Management (LPM) Supported SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x02 Latency Tolerance Messages (LTM) Supported wSpeedsSupported 0x000e Device can operate at Full Speed (12Mbps) Device can operate at High Speed (480Mbps) Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 2 Lowest fully-functional device speed is High Speed (480Mbps) bU1DevExitLat 10 micro seconds bU2DevExitLat 2047 micro seconds Device Status: 0x0010 (Bus Powered) Latency Tolerance Messaging (LTM) Enabled ``` The driver kernel module is loaded and seems to be working: ``` $ sudo lshw -C network *-network description: Wireless interface product: Wireless 8265 / 8275 vendor: Intel Corporation physical id: 0 bus info: pci@0000:02:00.0 logical name: wlp2s0 version: 78 serial: 00:28:f8:9a:bd:3e width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=4.11.0-041100-generic firmware=22.391740.0 ip=192.168.0.59 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:145 memory:edc00000-edc01fff *-network DISABLED description: Ethernet interface physical id: 2 logical name: eth0 serial: d4:81:d7:35:8c:11 size: 1Gbit/s capacity: 1Gbit/s capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.08.9 duplex=full link=no multicast=yes port=MII speed=1Gbit/s ``` ``` $ lsmod | grep r8152 r8152 49152 0 mii 16384 2 usbnet,r8152 ``` The ethernet device is created, but DOWN: ``` ifconfig -a eth0: flags=4098<BROADCAST,MULTICAST> mtu 1500 ether d4:81:d7:35:8c:11 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 ``` Manually setting up connection works: ``` $ sudo ifconfig eth0 up $ sudo dhclient eth0 $ ifconfig -a eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.0.213 netmask 255.255.255.0 broadcast 192.168.0.255 inet6 fe80::d681:d7ff:fe35:8c11 prefixlen 64 scopeid 0x20<link> ether d4:81:d7:35:8c:11 txqueuelen 1000 (Ethernet) RX packets 255 bytes 154738 (154.7 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 260 bytes 77762 (77.7 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 ... pkolaczk@p5520:~$ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default gateway 0.0.0.0 UG 0 0 0 eth0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 $ ping ubuntu.com PING ubuntu.com (91.189.94.40) 56(84) bytes of data. 64 bytes from ovinnik.canonical.com (91.189.94.40): icmp_seq=1 ttl=47 time=42.5 ms 64 bytes from ovinnik.canonical.com (91.189.94.40): icmp_seq=2 ttl=47 time=42.8 ms ``` Additionally, I noticed a Huawei E3272 LTE modem USB dongle also doesn't work exactly *the same way*. When I insert the dongle, its LED turns on after a few seconds, indicating the modem initialized properly. The network interface (enx582c80139263) is created, but in a down state. Then if I manually make it UP and run dhclient, I get Internet connectivity just fine. Ubuntu 17.04, all updates applied as of today. I tried purging network-manager package and installing again but it didn't help. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1689261/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
