More details:
With a clean install of Ubuntu 12.04, upgraded to kernel 3.2.0-54,
wireless does not work: error in dmesg "Failed to request firmware!"
>From modinfo: required firmware:
firmware: rtlwifi/rtl8192cfwU_B.bin
firmware: rtlwifi/rtl8192cfwU.bin
firmware: rtlwifi/rtl8192cfw.bin
>From Larry Finger I received the list of what is found in the kernel git
repo for linux-firmware. While testing this, I noticed that
rtl8192cfwU_B.bin and rtl8192cfwU.bin where missing and requested by the
driver. Copying those two files from the Realtek website makes my wifi
work again :-).
missing in the Ubuntu installation:
rtl8188efw
rtl8188eufw
rtl8192cfwU_B
rtl8192cfwU
rtl8192cufw_A
rtl8192cufw_B
rtl8192cufw_TMSC
different:
rtl8192defw
rtl8192sefw
rtl8712u
the same:
rtl8192cfw
rtl8192cufw
rtl8723fw_B
rtl8723fw
Details of test machine:
test@test-Intel-powered-classmate-PC:/lib/firmware$ md5sum rtlwifi/*
748944fbffd3b08b5b1929bb6c7fc537 rtlwifi/rtl8192cfw.bin
943e9b714a926e630b8152d7aad91d2e rtlwifi/rtl8192cufw.bin
7a3b61dbd72e0efb22f892ece8020994 rtlwifi/rtl8192defw.bin
bccf9bf2276621770f101a60736b4004 rtlwifi/rtl8192sefw.bin
8e6396b5844a3e279ae8679555dec3f0 rtlwifi/rtl8712u.bin
ce50dfe07dbb1bfe9e14bdb315a4b28a rtlwifi/rtl8723fw_B.bin
69ccaffbe94cc0ef1b89c25290e19b2e rtlwifi/rtl8723fw.bin
test@test-Intel-powered-classmate-PC:/lib/firmware$ ls -l rtlwifi/
totaal 308
-rw-r--r-- 1 root root 13540 dec 11 2012 rtl8192cfw.bin
-rw-r--r-- 1 root root 16014 dec 11 2012 rtl8192cufw.bin
-rw-r--r-- 1 root root 20526 dec 11 2012 rtl8192defw.bin
-rw-r--r-- 1 root root 88856 dec 11 2012 rtl8192sefw.bin
-rw-r--r-- 1 root root 129304 dec 11 2012 rtl8712u.bin
-rwxr-xr-x 1 root root 22996 jul 11 14:43 rtl8723fw_B.bin
-rwxr-xr-x 1 root root 11662 jul 11 14:43 rtl8723fw.bin
test@test-Intel-powered-classmate-PC:/lib/firmware$ modinfo rtl8192ce
filename:
/lib/modules/3.2.0-54-generic-pae/kernel/drivers/net/wireless/rtlwifi/rtl8192ce/rtl8192ce.ko
firmware: rtlwifi/rtl8192cfwU_B.bin
firmware: rtlwifi/rtl8192cfwU.bin
firmware: rtlwifi/rtl8192cfw.bin
description: Realtek 8192C/8188C 802.11n PCI wireless
license: GPL
author: Larry Finger <larry.fin...@lwfinger.net>
author: Realtek WlanFAE <wlan...@realtek.com>
author: lizhaoming <chaoming...@realsil.com.cn>
srcversion: DA52BF758B7683607AFCB85
alias: pci:v000010ECd00008176sv*sd*bc*sc*i*
alias: pci:v000010ECd00008177sv*sd*bc*sc*i*
alias: pci:v000010ECd00008178sv*sd*bc*sc*i*
alias: pci:v000010ECd00008191sv*sd*bc*sc*i*
depends: rtlwifi,rtl8192c-common,mac80211
intree: Y
vermagic: 3.2.0-54-generic-pae SMP mod_unload modversions 686
parm: swenc:Set to 1 for software crypto (default 0)
(bool)
parm: ips:Set to 0 to not use link power save (default 1)
(bool)
parm: swlps:Set to 1 to use SW control power save (default 0)
(bool)
parm: fwlps:Set to 1 to use FW control power save (default 1)
(bool)
parm: debug:Set debug level (0-5) (default 0) (int)
*-network UNCLAIMED
description: Network controller
product: RTL8188CE 802.11b/g/n WiFi Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: ioport:2000(size=256) memory:80100000-80103fff
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1239414
Title:
rtl8192ce fails to load firmware
Status in “linux-firmware” package in Ubuntu:
New
Bug description:
Ubuntu 12.04.3 LTS
linux-firmware 1.79.6
Wireless for Realtek rtl8188ce, based on the module r8192ce, is broken
on kernel 3.2.0 since arround release 40.
The error message in dmesg is:
rtl8192ce:rtl92c_init_sw_vars():<0-0> Failed to request firmware!
rtlwifi: rtl_pic_probe():<0-0> Can't init_sw_vars.
rtl8192ce 0000:02:00.0: PCI INT A disabled
Possible cause:
I figured out that it is probably broken, because of updating the drivers in
the kernel (see
http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/log/?h=linux-3.2.y&id=e6deaf810cc4b6437d55179660776e131ac059df&qt=grep&q=rtl8192ce&showmsg=1)
without updating to the new firmware. That firmware is never added to the
linux-firmware package. (rtl8192cfw.bin dates from 2010).
Working solution:
Simply copying the firmware, downloaded from the Realtek website to
/lib/firmware/rtlwifi makes wifi work again on kernel 3.2.0-54-generic-pae
Link to the package, containing the firmware:
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=48&PFid=48&Level=5&Conn=4&DownTypeID=3&GetDown=false&Downloads=true#2722
Please add the new firmware to the linux-firmware package.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1239414/+subscriptions
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