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IDProjectCategoryView StatusLast Update
0000623channel: elrepo/el7kmod-wlpublic2016-02-06 08:31
Reporterdafh Assigned Tostindall  
PrioritynormalSeveritymajorReproducibilityalways
Status closedResolutionno change required 
Summary0000623: No Wireless: Broadcom BCM43142 with 3.10.0-327.4.4.el7.x86_64 kernel
DescriptionI have installed centOS 7 two weeks ago and even following http://elrepo.org/tiki/wl-kmod (and many other solutions) and I don't have wireless connection (only ethernet). Has anyone have this problem with that Broadcom device?

I also try to enable the touchpad but failed and I got no other option to use an external one; pnp fails at booting.

TagsNo tags attached.
Reported upstream

Activities

stindall

2016-01-16 12:33

administrator   ~0004634

The most common kmod-wl issue is the need to build kmod-wl against a kernel within the current EL point release, which in the case for EL 7.2 would be 3.10.0-327*el7.x86_64.

Please run:

 # find -L /lib/modules -type f -name wl.ko

The output will identify which kernel (kversion) kmod-wl was built against (/lib/modules/<kversion>/extra/wl/wl.ko) and which kernels it can weak link to (/lib/modules/<kversion>/weak-updates/wl/wl.ko).


The touchpad question is unrelated and not addressed here. You could look at our FAQ #4 ( http://elrepo.org/tiki/FAQ ) as a starting point.

Please note that bug trackers are intended for resolving problems with packages and not for general troubleshooting.


From a working kmod-wl system:

 # uname -r
 3.10.0-327.3.1.el7.x86_64

 # rpm -q kmod-wl
 kmod-wl-6_30_223_271-2.el7.local.x86_64

 # lspci -nn|grep Broadcom
 03:00.0 Network controller [0280]: Broadcom Corporation BCM4321 802.11a/b/g/n [14e4:4328] (rev 03)

 # find -L /lib/modules -type f -name wl.ko
 /lib/modules/3.10.0-327.el7.x86_64/extra/wl/wl.ko
 /lib/modules/3.10.0-327.3.1.el7.x86_64/weak-updates/wl/wl.ko

 # iwconfig wlp3s0
 wlp3s0 IEEE 802.11abg ESSID:"guest"
           Mode:Managed Frequency:2.447 GHz Access Point: 06:18:E7:DD:52:3A
           Bit Rate=78 Mb/s Tx-Power=200 dBm
           Retry short limit:7 RTS thr:off Fragment thr:off
           Encryption key:off
           Power Management:off
           Link Quality=41/70 Signal level=-69 dBm
           Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
           Tx excessive retries:0 Invalid misc:0 Missed beacon:0

dafh

2016-01-18 07:51

reporter   ~0004638

Thanks for your answer and sorry for this late one:


Output of # find -L /lib/modules -type f -name wl.ko:
/lib/modules/3.10.0-327.4.4.el7.x86_64/kernel/drivers/net/wireless/wl.ko

but I had an 'warning' at the momento of building about incompatible wl.ko with this kernel (I can't make that it appears again due to my many tries of fixing this)

the output of rpm -q kmod-wl:
package kmod-wl is not installed

and

# lspci -nn|grep Broadcom
06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)

no wireless extension on iwconfig

stindall

2016-01-18 09:41

administrator   ~0004639

Your issues are unrelated to kmod-wl, because kmod-wl is not installed.

Also, there is no native EL7 .../kernel/drivers/net/wireless/wl.ko. My assumption is that your wl.ko is due to manually building the Broadcom driver, which will fail for EL7 kernels because the kernel version does not reflect the kernel wireless stack due to RHEL backporting. The wl-kmod.nosrc.rpm corrects that issue and allows a functional kmod-wl / wl.ko to be built for EL5/6/7.

Please follow the instructions at http://elrepo.org/tiki/wl-kmod and then install the resulting kmod-wl.

If you need additional help, please subscribe to our mail list ( http://lists.elrepo.org/mailman/listinfo/elrepo ) where many members are experienced with kmod-wl usage.

Issue History

Date Modified Username Field Change
2016-01-16 11:12 dafh New Issue
2016-01-16 11:12 dafh Status new => assigned
2016-01-16 11:12 dafh Assigned To => stindall
2016-01-16 11:38 burakkucat Project channel: kernel/el7 => channel: elrepo/el7
2016-01-16 11:39 burakkucat Reproducibility unable to reproduce => always
2016-01-16 11:39 burakkucat Category --kernel--OTHER-- => kmod-wl
2016-01-16 12:33 stindall Note Added: 0004634
2016-01-16 12:33 stindall Status assigned => feedback
2016-01-18 07:51 dafh Note Added: 0004638
2016-01-18 09:41 stindall Note Added: 0004639
2016-01-18 09:41 stindall Status feedback => resolved
2016-01-18 09:41 stindall Resolution open => no change required
2016-02-06 08:31 stindall Status resolved => closed