[SOLVED]No wireless on Ubuntu 20.04 for Broadcom adapter

**gordan-vrbanec-vepar** · April 28th, 2020

dpkg reports:

Code:

Version: 6.30.223.271+bdcom-0ubuntu5
Config-Version: 6.30.223.271+bdcom-0ubuntu5

modprobe:

Code:

modprobe: FATAL: Module wl not found in directory /lib/modules/5.4.0-26-generic

**chili555** · April 28th, 2020

I wonder if there was an error that you missed when you installed it. Please run again:

Code:

sudo apt install --reinstall bcmwl-kernel-source

Does it end with:

wl.ko:
Running module version sanity check.
- Original module
- No original module exists within this kernel
- Installation
- Installing to /lib/modules/5.4.0-26-generic/updates/dkms/

depmod...

DKMS: install completed.

Or does it end differently? Please post.

**gordan-vrbanec-vepar** · April 28th, 2020

Hmm, i get:

Code:

E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.

i did what it said and then i get this:
https://imgur.com/a/vteq1Ru

i press enter and nothing happens

**jeremy31** · April 28th, 2020

The build log for the 5.4.0-26 kernel is not pretty

Code:

DKMS make.log for bcmwl-6.30.223.271+bdcom for kernel 5.4.0-26-generic (x86_64)
Tue 28 Apr 2020 04:34:37 PM CDT
make: Entering directory '/usr/src/linux-headers-5.4.0-26-generic'
CFG80211 API is prefered for this kernel version
Using CFG80211 API
  AR      /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/built-in.a
  CC [M]  /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/shared/linux_osl.o
  CC [M]  /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.o
  CC [M]  /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_iw.o
  CC [M]  /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_cfg80211_hybrid.o
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c: In function ‘wl_pci_probe’:
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c:780:2: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
  780 |  if ((val & 0x0000ff00) != 0)
      |  ^~
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c:782:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
  782 |   bar1_size = pci_resource_len(pdev, 2);
      |   ^~~~~~~~~
In file included from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_cfg80211_hybrid.c:40:
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_cfg80211_hybrid.c: In function ‘wl_set_auth_type’:
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_cfg80211_hybrid.h:52:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
   52 |  if (wl_dbg_level & WL_DBG_DBG) {   \
      |     ^
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_cfg80211_hybrid.c:816:3: note: in expansion of macro ‘WL_DBG’
  816 |   WL_DBG(("network eap\n"));
      |   ^~~~~~
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_cfg80211_hybrid.c:817:2: note: here
  817 |  default:
      |  ^~~~~~~
In file included from ./include/linux/bitmap.h:9,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/cpumask.h:5,
                 from ./arch/x86/include/asm/msr.h:11,
                 from ./arch/x86/include/asm/processor.h:21,
                 from ./arch/x86/include/asm/cpufeature.h:5,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:38,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:78,
                 from ./include/linux/spinlock.h:51,
                 from ./include/linux/seqlock.h:36,
                 from ./include/linux/time.h:6,
                 from ./include/linux/stat.h:19,
                 from ./include/linux/module.h:10,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/include/linuxver.h:40,
                 from /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c:27:
In function ‘strncpy’,
    inlined from ‘_wl_add_monitor_if’ at /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c:2980:2:
./include/linux/string.h:281:9: warning: ‘__builtin_strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
  281 |  return __builtin_strncpy(p, q, size);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/src/wl/sys/wl_linux.c: In function ‘_wl_add_monitor_if’:
./include/linux/string.h:302:10: note: length computed here
  302 |   return __builtin_strlen(p);
      |          ^~~~~~~~~~~~~~~~~~~
  LD [M]  /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/wl.o
CFG80211 API is prefered for this kernel version
Using CFG80211 API
  Building modules, stage 2.
  MODPOST 1 modules
  CC [M]  /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/wl.mod.o
  LD [M]  /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/wl.ko
make: Leaving directory '/usr/src/linux-headers-5.4.0-26-generic'

Build log for broadcom-sta-dkms isn't much better

Code:

DKMS make.log for broadcom-sta-6.30.223.271 for kernel 5.4.0-26-generic (x86_64)
Tue 28 Apr 2020 04:36:27 PM CDT
/bin/sh: 1: [: Illegal number: 
/bin/sh: 1: [: Illegal number: 
Wireless Extension is the only possible API for this kernel version
Using Wireless Extension API
KBUILD_NOPEDANTIC=1 make -C /lib/modules/5.4.0-26-generic/build M=`pwd`
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
make[1]: Entering directory '/usr/src/linux-headers-5.4.0-26-generic'
CFG80211 API is prefered for this kernel version
Using CFG80211 API
Kernel architecture is X86_64
  AR      /var/lib/dkms/broadcom-sta/6.30.223.271/build/built-in.a
  CC [M]  /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/shared/linux_osl.o
  CC [M]  /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_linux.o
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_linux.c: In function ‘wl_pci_probe’:
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_linux.c:787:2: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
  787 |  if ((val & 0x0000ff00) != 0)
      |  ^~
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_linux.c:789:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
  789 |   bar1_size = pci_resource_len(pdev, 2);
      |   ^~~~~~~~~
In file included from ./include/linux/bitmap.h:9,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/cpumask.h:5,
                 from ./arch/x86/include/asm/msr.h:11,
                 from ./arch/x86/include/asm/processor.h:21,
                 from ./arch/x86/include/asm/cpufeature.h:5,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:38,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:78,
                 from ./include/linux/spinlock.h:51,
                 from ./include/linux/seqlock.h:36,
                 from ./include/linux/time.h:6,
                 from ./include/linux/stat.h:19,
                 from ./include/linux/module.h:10,
                 from /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/include/linuxver.h:40,
                 from /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_linux.c:27:
In function ‘strncpy’,
    inlined from ‘_wl_add_monitor_if’ at /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_linux.c:2989:2:
./include/linux/string.h:281:9: warning: ‘__builtin_strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
  281 |  return __builtin_strncpy(p, q, size);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_linux.c: In function ‘_wl_add_monitor_if’:
./include/linux/string.h:302:10: note: length computed here
  302 |   return __builtin_strlen(p);
      |          ^~~~~~~~~~~~~~~~~~~
  CC [M]  /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_iw.o
  CC [M]  /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_cfg80211_hybrid.o
In file included from /var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_cfg80211_hybrid.c:43:
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_cfg80211_hybrid.c: In function ‘wl_set_auth_type’:
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_cfg80211_hybrid.h:52:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
   52 |  if (wl_dbg_level & WL_DBG_DBG) {   \
      |     ^
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_cfg80211_hybrid.c:817:3: note: in expansion of macro ‘WL_DBG’
  817 |   WL_DBG(("network eap\n"));
      |   ^~~~~~
/var/lib/dkms/broadcom-sta/6.30.223.271/build/src/wl/sys/wl_cfg80211_hybrid.c:818:2: note: here
  818 |  default:
      |  ^~~~~~~
  LD [M]  /var/lib/dkms/broadcom-sta/6.30.223.271/build/wl.o
CFG80211 API is prefered for this kernel version
Using CFG80211 API
Kernel architecture is X86_64
  Building modules, stage 2.
  MODPOST 1 modules
  CC [M]  /var/lib/dkms/broadcom-sta/6.30.223.271/build/wl.mod.o
  LD [M]  /var/lib/dkms/broadcom-sta/6.30.223.271/build/wl.ko
make[1]: Leaving directory '/usr/src/linux-headers-5.4.0-26-generic'

**chili555** · April 28th, 2020

Please disable Secure Boot in the BIOS/EFI and then try again:

Code:

sudo dpkg --configure -a

Secure Boot was probably the underlying issue all along!

**gordan-vrbanec-vepar** · April 28th, 2020

Originally Posted by chili555

Please disable Secure Boot in the BIOS/EFI and then try again:

Code:

sudo dpkg --configure -a

Secure Boot was probably the underlying issue all along!

I see! I'll go do that, i'll google how to disable it. This will i'm sure require a restart so i'll post again when it's done.
Hopefully that solves it!

**chili555** · April 28th, 2020

Originally Posted by jeremy31

The build log for the 5.4.0-26 kernel is not pretty

Yeah, mine is ugly, too. However, the driver does build and load. I don't know if it properly drives the device. I haven't a Broadcom to test.

**gordan-vrbanec-vepar** · April 28th, 2020

Well, it works now, although, i'm not sure secure boot is off...

I found online that i should run:

Code:

sudo mokutil --disable-validation

So i did that, it prompted me for a password and upon reboot in MOK i selected Change Secure boot state to off.

I then ran:

Code:

sudo dpkg --configure -a

again, but i was greeted with the same screen. I pressed Alt+C and the screen was gone and it prompted me to make a key which i did. Then the configuration continued.
After it was done, i did sudo reboot and was greeted with MOK. The second option had something about a key, so i chose that, entered the key i made, and now i have wireless.

Weird. I don't know what happened now, is the secure boot off or not? Because i turned it off, but i still got the same message that it's on. Yet i still managed to complete the configuration and now it works.

So yes, thank you chili555

secure boot was indeed the issue! Hopefully it won't cause future problems.