On Thu, May 18, 2017 at 05:59:16PM -0700, system_halted wrote:
> Hi,
> I am new to BSD world, yet enjoying very much OpenBSD 6.1 that I have
> installed recently. As a newcomer I have some questions, sorry for having a
> mix of everything.
> 
> 1. I have a pendrive with ext3fs
> 
> fdisk output on Debian:
> Disk /dev/sdc: 29.8 GiB, 32027705344 bytes, 62554112 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: dos
> Disk identifier: 0xbb378728
> 
> Device     Boot Start      End  Sectors  Size Id Type
> /dev/sdc1        2048 62554111 62552064 29.8G 83 Linux
> 
> disklabel:
> # /dev/rsd2c:
> type: SCSI
> disk: Debian testing a
> label: md64 1
> duid: 0000000000000000
> flags:
> bytes/sector: 512
> sectors/track: 32
> tracks/cylinder: 64
> sectors/cylinder: 2048
> cylinders: 30544
> total sectors: 62554112
> boundstart: 0
> boundend: 62554112
> drivedata: 0
> 
> 16 partitions:
> #                size           offset  fstype [fsize bsize   cpg]
>   a:         62554112                0 ISO9660
>   c:         62554112                0 ISO9660
> 
> 
> What is that I am missing? To my understanding OpenBSD does handle ext3, is
> this some kind of a problem with partition table on the drive? I did put
> ISO image of Debian testing on that drive with cp before, but than deleted
> all partitions created new and formatted the drive. After mounting sd2a
> I can see directory tree of ISO image that originally was on that drive,
> content of the files is obviously all messed up. sd2c cannot be mounted
> "Device not configured".

Adding to Stuart Henderson's reply, note that you can't mount /dev/sd2c.
>From disklabel(8):

  disklabel supports 15 configurable partitions, ‘a’ through ‘p’,
  excluding ‘c’.  The ‘c’ partition describes the entire physical disk, is
  automatically created by the kernel, and cannot be modified or deleted
  by disklabel. 

OpenBSD's fdisk output might also be helpful.
 
> 2. Firefox
> Seem to have problems with certain sites with js - cannot get through to
> log in into protonmail.com, Epiphany handles it without any problems. This
> is not associated with any addons that I have on FF, tried in on fresh
> vanilla FF and result is the same. Did anyone observe similar issue?
> Resolving suggestions?
> 
> 3. Audio
> With headphones in there is a slight white noise that can be heard. I do
> not have that effect while on Debian. This effect does not go away when
> playing sound or reducing volume to 0 (xfce4-mixer). Any suggestions?

The only cases in which I've seen something more or less similar is on a
MacBook, in which the OS powers off the audio card when it's not being
used, which is very noticeable when on headphones, since they stop
humming.  The background hum you refer is almost certainly hardware related
-- lookup "ground loop" on wikipedia or the like --  so the software is
not (directly) at fault here.  I'm guessing that the APM in Debian is
powering off the audio card, which doesn't happen on OpenBSD, but maybe
someone else more knowledgeable wants to chime in on that.

Cheers
Zé
>
> Thanks,
> ic1
> 

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