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
Status in “linux” package in Ubuntu:
Incomplete
Status in “network-manager” package in Ubuntu:
Incomplete
Bug description:
Ubuntu12.04.1
1) Shutdown the PC
2) reboot the PC, start the Ubuntu session
Expected result: Wi-Fi networks are detected in the Network applet
Observed result: sometimes no networks appear in the Network applet.
Disabling and enabling wireless fixes it.
May be linked to Bug #1051084
Maybe partially/totally due to bad WiFi signal/provider.
Below are the Apport files before disabling/enabling wireless.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
Uname: Linux 3.2.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
CRDA:
country EC:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 20), (3, 17)
(5250 - 5330 @ 20), (3, 23), DFS
(5735 - 5835 @ 20), (3, 30)
Date: Mon Sep 17 08:36:50 2012
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
IpRoute:
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
NAME UUID TYPE
TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY
DBUS-PATH
Wired connection 1 68688f58-1e37-4cf1-8716-ab2423525464
802-3-ethernet 1347863714 lun. 17 sept. 2012 08:35:14 CEST yes
no /org/freedesktop/NetworkManager/Settings/1
NUMERICABLE-BDB7 6285f33d-ba83-4866-8ace-b67ed4ca4485
802-11-wireless 1347841081 lun. 17 sept. 2012 02:18:01 CEST yes
no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
eth0 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/1
wlan0 802-11-wireless disconnected
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.4.0 disconnected enabled enabled
enabled enabled disabled
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: yyy 1648 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf7e00000 irq 43'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:10ec0269,15584140,00100100
HDA:80862805,15584140,00100000'
Controls : 27
Simple ctrls : 13
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=56eb9210-7151-425c-93dd-b92af2e792ba
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
IpRoute:
default via 192.168.0.1 dev wlan0 proto static
169.254.0.0/16 dev wlan0 scope link metric 1000
192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.14 metric
2
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
MachineType: CLEVO CO. W240HU/W250HUQ
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
Package: network-manager 0.9.4.0-0ubuntu4.1
PackageArchitecture: amd64
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-31-generic
root=UUID=789016b1-f3f0-4b76-be92-afa2dbb36c5e ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
RelatedPackageVersions:
linux-restricted-modules-3.2.0-31-generic N/A
linux-backports-modules-3.2.0-31-generic N/A
linux-firmware 1.79.1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
StagingDrivers: mei
Tags: precise running-unity staging precise running-unity
Uname: Linux 3.2.0-31-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 08/09/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.4
dmi.board.asset.tag: Tag 12345
dmi.board.name: W240HU/W250HUQ
dmi.board.vendor: CLEVO CO.
dmi.board.version: D02A
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd08/09/2011:svnCLEVOCO.:pnW240HU/W250HUQ:pvrNotApplicable:rvnCLEVOCO.:rnW240HU/W250HUQ:rvrD02A:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: W240HU/W250HUQ
dmi.product.version: Not Applicable
dmi.sys.vendor: CLEVO CO.
nmcli-con:
NAME UUID TYPE
TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY
DBUS-PATH
Connexion filaire 1 c8eee114-f9a2-4973-823d-1e954e5cd2c0
802-3-ethernet 1350075757 ven. 12 oct. 2012 23:02:37 CEST yes
no /org/freedesktop/NetworkManager/Settings/1
NUMERICABLE-BDB7 6285f33d-ba83-4866-8ace-b67ed4ca4485
802-11-wireless 1350076356 ven. 12 oct. 2012 23:12:36 CEST yes
no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
eth0 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/1
wlan0 802-11-wireless connected
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.4.0 connected enabled enabled
enabled enabled disabled
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