Hello all,
It might be related too
I am helping a friend with this laptop running Ubuntu 12.04
uname -a:
linux 3.2.0-32-generic-pae #51-Ubuntu SMP Wed Sep 26 21:54:23 UTC 2012 i686
athlon i386 GNU/Linux
lshw:
product: Satellite C655D (PSC0YU-03G02C)
vendor: TOSHIBA
version: PSC0YU-03G02C
serial: 9B197259Q
width: 32 bits
capabilities: smbios-2.7 dmi-2.7
configuration: boot=normal chassis=notebook family=Type1Family
sku=PSC0YU-03G02C uuid=B52B24F0-DDA9-11E0-A412-00266CDB1E20
It also uses the infamous rtl8193ce driver. My friend complained about frequent
loss of connections and sudden system freezes. AMOF, Windows 7 was even worse
to constantly shutdown by itself. So I suspected some hardware problem...
When I got a hold of it I saw the freezes with 3.2.0-23 kernel and spurious
output of the rlt driver flooding the logs. After the upgrade to 0-30 and 0-32
freezes (due to the networking) stopped. However, what I found was that
networking is lost completely when after resume from suspend. It was weird,
that both wireless and wired interfaces just never worked. I tried to restart
networking, network-manager services, rmomodding and modprobbing all modules
related to rtl8193ce in many different orders. Nothing seemed to work, before
I realizes that networking must be stopped before any other service prior to
suspend and then started after every other service on resume. So here's a weird
but working pm sleep hook /etc/pm/sleep.d/00_netwokmanager:
#!/bin/bash
# prior to the suspend-to-ram the weird rtl8192ce driver wants to be unloaded
early on and be loaded back late after resume. Say without both sleeps and
waiting some time networking won't be recovered at all
case $1 in
suspend)
/etc/init.d/network-manager stop
#it's weird, but it won't recover without this
sleep 3
;;
resume)
# capricious rtl8192ce needs more time
sleep 10
/etc/init.d/network-manager start
;;
*) ;;
esac
Let me know what you think about this
Thanks
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https://bugs.launchpad.net/bugs/1051816
Title:
10ec:8176 No Wi-Fi at startup; disabling and enabling wireless fixes
it -- Realtek RTL8188CE rtl8192ce
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