Indeed, I think the driver itself needs to be investigated: there's at
least one indication of issues with reloading the firmware:
Sep 16 23:03:42 yyy-W240HU-W250HUQ kernel: [16829.885737]
rtl8192c_common:rtl92c_firmware_selfreset(): 8051 reset fail.
Sep 16 23:03:46 yyy-W240HU-W250HUQ kernel:
apport information
** Tags added: apport-collected staging
** Description changed:
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: no networks appear in the Network
Previous attached files are the result of apport-collect 1051816, from a
cold boot (not resume).
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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@mathieu-tl: thanks for your interest.
I will attach /var/log/syslog before and after suspend.
** Attachment added: syslog_before_suspend
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1051816/+attachment/3396679/+files/syslog_before_suspend
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** Attachment added: syslog_20s_after_resume (wifi connected)
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1051816/+attachment/3396684/+files/syslog_20s_after_resume%20%28wifi%20connected%29
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** Attachment added: syslog_just_after_resume (wifi trying to connect)
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1051816/+attachment/3396680/+files/syslog_just_after_resume%20%28wifi%20trying%20to%20connect%29
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AFTER RESUME (NO CONNECTION IN NM APPLET):
$ iwconfig
lono wireless extensions.
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thr:off
This sounds a lot like a kernel issue to me.
What happens after resume, does the iwconfig command still list the wifi
device? Are killswitches listed in 'rfkill list'?
This is relevant because there is some chance that this is in fact
caused by a memory bug that gets more easily triggered
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https://bugs.launchpad.net/bugs/1051816
Title:
No Wi-Fi at startup; disabling and enabling wireless fixes it --
Realtek RTL8188CE rtl8192ce
Status in
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