Try b43.allhwsupport=1

[Tiago Vintém]

Desinstalei o Window 7 e instalei o Umbutu 14.04LTS.
Computador portátil Acer Aspire 5741-7840, memória 2,6, processador Intel Core i3, CPU 350@2.27 GHzx4, gráficos Intel Ironlake Mobile, 64 bit, disco 243,1.
Após alguns segundos de apertar o botão de ligar, na sequência aparece a mensagem:
[18.471664] Support for cores revisions 0x17 and 0x18 disabled by module allhwsupport=0 Try b43.allhwsupport=1. Esta mensagem interrompe a sequência da inicialização por 4 a 6 segundos depois o computador carrega o sistema operacional normalmente.
Windows 7 inicializava corretamente sem emissão de mensagem.
A versão anterior ao Umbutu 14.04LTS apresentava a mensagem após alguns segundos de apertar o botão ligar sempre.
Tirei uma fotografica da mensagem(anexo).

[Gunnar Hjalmarsson (gunnarhj)]

Please translate to English.

[Tiago Vintém (tiago-vintem-deactivatedaccount)]

Gunnar Hjalmarsson, i'm sorry this happened.
I uninstalled and installed Window 7 Umbutu 14.04LTS.
Portable computerl Acer Aspire 5741-7840, memory 2,6, processor is Intel Core i3, CPU 350@2.27 GHzx4, graphics Intel Ironlake Mobile, 64 bit, disco 243,1.
After a few seconds of pressing the power button, the following message appears:
[18.471664] Support for cores revisions 0x17 and 0x18 disabled by module allhwsupport=0 Try b43.allhwsupport=1.
This message stops the booting sequence for 4-6 seconds after the computer loads the operating system normally.
The Windows 7 operating system initializing properly without issuing message.
Prior to Umbutu 14.04LTS version also had the message appear.
I took a photographic message (attached).
Thanks very much for information/bugs.

[Tiago Vintém (tiago-vintem-deactivatedaccount)]

After the startup sequence, the message is frozen on the screen for 4-6 seconds.

[Tiago Vintém (tiago-vintem-deactivatedaccount)]

I have (Ubuntu 14.04LTS) only operating system installed on the laptop.

[Gunnar Hjalmarsson (gunnarhj)]

Thanks. Your issue has nothing to do with the documentation, so I change that. Also, I'm not sure if it's a bug or just a need to change some config setting. I'd recommend that you ask for help at http://askubuntu.com/ to start with.