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My Lenovo Ideapad G50-70 will automatically disconnect from the Internet at random moments on 14.04. The network will first just stop working without any warning, and after a while, it will disconnect by itself. The strange thing is, I can't manage to get the computer back online without restarting the whole computer; it will not be able to connect to the network at all. Simply turning wireless/networking off and back on doesn't help at all. I've tried following old instructions to update drivers (as shown here: http://ubuntuforums.org/showthread.php?t=2080326 ), but it didn't help.

lspci -nnk | grep -iA2 net:

~$ lspci -nnk | grep -iA2 net
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
Subsystem: Lenovo Device [17aa:380a]
Kernel driver in use: r8168
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Lenovo Device [17aa:b736]
Kernel driver in use: rtl8723be

It would be awesome if somebody could help me out! I really don't want to use Windows 8 instead. :/

Stein Arne Brekke
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2 Answers2

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After digging more i found that it's a known bug in Ubuntu for the Realtek RTL8723BE adapter. See this bug report.
Also check out this closed question on same issue.

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heemayl
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I found this solution, and worked perfectly on a Lenovo g40-30 so i guess it should work in other lenovo pc...

quote:

for one time test:

sudo rmmod ideapad_laptop

for working after reboot:

echo "blacklist ideapad_laptop" | sudo tee -a /etc/modprobe.d/blacklist-ideapad.conf

found it in: Wifi Not Working On Ubuntu 14.04 Lenovo G 50-30

prior to that I re-installed the module, updated the kernel to 3.16, and none of that worked.

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t0b0nr3m0t0
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