On Thu, Jul 28, 2016 at 02:36:12PM +0200, Matthias Apitz wrote:
Another question related to this: One of my C720 (I have two) from one day to another does not do any beep with the pc-speaker, all other sound is working fine. I asked in the FreeBSD mailing lists and one of the hints was to check the BIOS configuration. I do not see any screens for this in SeaBIOS, only one to select the boot device number if there are two devices visible, the SSD and another USB device. Is there something I could check or modify in the SeaBIOS?
There isn't a way to ask a traditional BIOS to beep the speaker, so I'm not sure why you got that recommendation. It is possible to ask the vgabios to beep, but I'd be surprised if FreeBSD uses that method. (Since you're using a c720 you likely have the intel vgabios, and debugging that, if it is relevant, would be painful.)
As a random debugging suggestion, you could try reproducing the beeping case and pull the cbmem log and freebsd boot log, then try to reproduce the non-beeping case and compare both logs to see if there are any differences.
-Kevin