network connection doesn't start

[SteveRiley]

Ugh, a Realtek interface. Google has pointed me to numerous reports of issues just like yours -- the interface seems to start slower than others. I was unable to find any consistent solution.

You could try building a driver from Realtek's web site. Here's a page with instructions. It's a little old, so file names might have changed, but I suspect the basic framework is correct. You might also Google for "r8169 ubuntu driver" or something similar.

[Worzel]

Can;t offer any technical help but I have the same hardware. I did a clean install of 15.04 and the card etc was recognised right from the start.
Sometimes when logging in I do have to enter my router password but otherwise no problems. Restart from suspend is immediate.

*-network               
       description: Wireless interface
       product: RT3290 Wireless 802.11n 1T/1R PCIe
       vendor: Ralink corp.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: wlan0
       version: 00
       serial: **:**:**:**:**:**
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rt2800pci driverversion=3.19.0-21-generic firmware=0.37 ip=192.168.1.4 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:16 memory:f7d40000-f7d4ffff memory:f7d30000-f7d3ffff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 06
       serial: 00:23:81:15:1c:89
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168e-3_0.0.4 03/27/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:25 ioport:e000(size=256) memory:f0004000-f0004fff memory:f0000000-f0003fff

[gnomek]

Ugh, a Realtek interface.

Looks like this was the cause of the problem. I installed new driver and it is ok so far. I have waited so long to make sure that the problem will not reappear. It hasn't.
Thank you Steve.