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Thread: Backwards Compatibility BUG

  1. #1
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    Feb 2012
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    146

    Backwards Compatibility BUG

    Forum Members,
    WiFi works out-of-the-box w/6.4.3 liveCD:

    Code:
    knoppix@Microknoppix:~$ sudo modprobe -a ssb
    knoppix@Microknoppix:~$ sudo modprobe -a b43
    knoppix@Microknoppix:~$ sudo lsmod
    Module                  Size  Used by
    b43                   134859  0 
    rng_core                2338  1 b43
    mac80211              144095  1 b43
    cfg80211               95850  2 b43,mac80211
    ssb                    32414  1 b43
    ipv6                  196975  10 
    parport_pc             24132  0 
    ppdev                   4117  0 
    lp                      6119  0 
    parport                20814  3 parport_pc,ppdev,lp
    snd_usb_audio          57808  0 
    snd_hwdep               3950  1 snd_usb_audio
    tpm_tis                 5261  0 
    snd_usbmidi_lib        12490  1 snd_usb_audio
    snd_seq_midi            3200  0 
    tpm                     7773  1 tpm_tis
    snd_rawmidi            12467  2 snd_usbmidi_lib,snd_seq_midi
    tpm_bios                3347  1 tpm
    hp_wmi                  4393  0 
    ac                      2215  0 
    battery                 7656  0 
    option                 12650  0 
    usb_wwan                6011  1 option
    usbserial              21327  2 option,usb_wwan
    8139too                14396  0 
    snd_atiixp_modem        6535  0 
    sdhci_pci               4801  0 
    8250_pci               19272  0 
    8139cp                 12900  0 
    tifm_7xx1               3030  0 
    sdhci                  11970  1 sdhci_pci
    pcmcia                 24250  2 b43,ssb
    tifm_core               3258  1 tifm_7xx1
    mmc_core               43452  3 b43,ssb,sdhci
    mii                     2694  2 8139too,8139cp
    8250                   14974  1 8250_pci
    snd_atiixp              8993  1 
    ohci1394               20984  0 
    yenta_socket           15616  0 
    ieee1394               51946  1 ohci1394
    serial_core            12542  1 8250
    i2c_piix4               6580  0 
    snd_ac97_codec         77637  2 snd_atiixp_modem,snd_atiixp
    k8temp                  2407  0 
    joydev                  6866  0 
    ac97_bus                 714  1 snd_ac97_codec
    knoppix@Microknoppix:~$ sudo lsmod
    Module                  Size  Used by
    ipv6                  196975  10 
    parport_pc             24132  0 
    ppdev                   4117  0 
    lp                      6119  0 
    parport                20814  3 parport_pc,ppdev,lp
    snd_usb_audio          57808  0 
    snd_hwdep               3950  1 snd_usb_audio
    tpm_tis                 5261  0 
    snd_usbmidi_lib        12490  1 snd_usb_audio
    snd_seq_midi            3200  0 
    tpm                     7773  1 tpm_tis
    snd_rawmidi            12467  2 snd_usbmidi_lib,snd_seq_midi
    tpm_bios                3347  1 tpm
    hp_wmi                  4393  0 
    ac                      2215  0 
    battery                 7656  0 
    option                 12650  0 
    usb_wwan                6011  1 option
    usbserial              21327  2 option,usb_wwan
    8139too                14396  0 
    snd_atiixp_modem        6535  0 
    sdhci_pci               4801  0 
    8250_pci               19272  0 
    8139cp                 12900  0 
    tifm_7xx1               3030  0 
    sdhci                  11970  1 sdhci_pci
    pcmcia                 24250  0 
    tifm_core               3258  1 tifm_7xx1
    mmc_core               43452  1 sdhci
    mii                     2694  2 8139too,8139cp
    8250                   14974  1 8250_pci
    snd_atiixp              8993  1 
    ohci1394               20984  0 
    yenta_socket           15616  0 
    ieee1394               51946  1 ohci1394
    serial_core            12542  1 8250
    i2c_piix4               6580  0 
    snd_ac97_codec         77637  2 snd_atiixp_modem,snd_atiixp
    k8temp                  2407  0 
    joydev                  6866  0 
    ac97_bus                 714  1 snd_ac97_codec
    knoppix@Microknoppix:~$
    Code:
    knoppix@Microknoppix:~$ sudo iwconfig
    lo        no wireless extensions.
    
    eth0      no wireless extensions.
    
    wlan0     IEEE 802.11bg  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Encryption key:off
              Power Management:off
    knoppix@Microknoppix:~$
    Wifi is Dead-on-arrival w/6.7.1 liveCD:
    Code:
            knoppix@Microknoppix:~$ sudo modprobe -a ssb
            knoppix@Microknoppix:~$ sudo modprobe -a b43
            WARNING: Module b43 not found.
            knoppix@Microknoppix:~$
    Can someone show in the Debian-Knoppix 6.7.1 open source code
    where things related to this bug changed from 6.4.3?

    Reply requested, please . . .

  2. #2
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    What are the kernel versions of Knoppix 6.4.3 and 6.7.1? The command
    Code:
    uname -a
    will show you the details.

  3. #3
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    @ luther

    You've done your job well.
    Now we need to find out where the wifi hardware discovery code is
    and find someone who can read it.

    Also, we need to identify this thread to pertain specifically to Broadcom 4318.

  4. #4
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    Kernel Version of Knoppix 6.4.3

    Quote Originally Posted by klaus2008 View Post
    What are the kernel versions of Knoppix 6.4.3 and 6.7.1? The command
    Code:
    uname -a
    will show you the details.
    Code:
    knoppix@Microknoppix:~$ sudo uname -a
    Linux Microknoppix 2.6.36.1 #10 SMP PREEMPT Fri Nov 26 10:33:59 CET 2010 i686 GNU/Linux
    knoppix@Microknoppix:~$
    * sent w/Knoppix 6.4.3 & Iceweasel

  5. #5
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    Kernel Version of Knoppix 6.7.1

    Quote Originally Posted by klaus2008 View Post
    What are the kernel versions of Knoppix 6.4.3 and 6.7.1? The command
    Code:
    uname -a
    will show you the details.
    Code:
    knoppix@Microknoppix:~$ sudo uname -a
    Linux Microknoppix 3.0.4 #12 SMP PREEMPT Thu Sep 8 05:27:05 CEST 2011 i686 GNU/Linux
    knoppix@Microknoppix:~$
    ** sent w/Knoppix 6.7.1 LiveCD

    Yours,
    luther

  6. #6
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    Chipsets Involved

    Quote Originally Posted by utu View Post
    we need to identify this thread to pertain specifically to Broadcom 4318.
    The maintainer says this driver supports these chipsets:
    BCM4306/3
    BCM4311
    BCM4312
    BCM4318
    * SEE ATTACHMENT
    b43ins5..jpg

  7. #7
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    If you read the kernel configuration file /boot/config-3.0.4 of Knoppix 6.7.1 you will find the line
    # CONFIG_B43 is not set
    That means the needed kernel module was not built. I think that you must build your own Linux kernel with enabled support for your chipset if you want to use your BCM4318 with Knoppix 6.7.1.

  8. #8
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    Greetings, klaus2008

    Are you able to determine why the b43 driver was not
    provided as well as the wl driver?

    For example, has a simple blacklist caused this not to happen?
    Note, BOTH b43 and wl were included in the earlier Knoppix.

    As an alternative line of inquiry, where might we find the code that
    sets up wl and provides it, and is this code readable bash or
    binary?

    Thanks.
    Last edited by utu; 04-18-2012 at 11:32 PM.

  9. #9
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    Thumbs down B43 kernel module was not even built

    Quote Originally Posted by klaus2008 View Post
    If you read the kernel configuration file /boot/config-3.0.4 of Knoppix 6.7.1 you will find the line That means the needed kernel module was not built. I think that you must build your own Linux kernel with enabled support for your chipset if you want to use your BCM4318 with Knoppix 6.7.1.
    Dear klaus2008: I'm reading between the lines and suspect it was done on purpose. Could it possibly have opened the door to Pandora's Box? This being the case, suspect knoppix 7.0 is in the same boat. I would like a confirmation, please? THX luther


  10. #10
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    @ luther & others

    Klaus K confirms our suspicions, and luther's homework and is aware of our concerns.
    We can probably expect some of his comments and/or remedy sometime in the future.
    One might assume Knoppix 7 and his day job probably are keeping him pretty busy
    for the moment.

    Still, I am tantalized that we see ssb but not b43 in 6.7.1.
    It feels like some simple, misplaced blacklist might yet explain it all.

    Cheers.
    Last edited by utu; 04-19-2012 at 12:50 AM.

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