At Sat, 13 Feb 2016 10:14:30 -0500 CentOS mailing list <centos@xxxxxxxxxx> wrote:
>
> I sent this out about a week or so ago, but I have heard nothing. I am
> *thinking* it is a SELINUX problem, but I cannot figure out what. The SELINUX
> settings for both machines are *exactly* the same (the stock defaults for a
> standard CentOS 6 install). The *only* difference is that the desktop
> (sauron) has a few VMs setup (under KVM) and the laptop (gollum) does not. The
> desktop has an AMD processor and a nVidia video chipset and the laptop has an
> Intel processor and an Intel graphic controller. Although I can't see how
> either the processor or video chipset would have anything to to with the USB
> or USB serial port-type devices. The desktop also has a PCI quad serial port
> card and includes the 8250.nr_uarts=8 kernel option and is set up to use an
> analog dialup modem to make PPP connections (again, I don't see that as having
> anything to do with anything).
OK, I tried rebooting without the '8250.nr_uarts=8' option and that had no
effect.
I wonder if I should file a bug report? I don't know if I should file it with
the Red Hat bugzilla or the CentOS bugzilla.
>
> Both machines are running the same kernel: 2.6.32-573.12.1.el6.x86_64
>
>
>
>
> At Thu, 4 Feb 2016 16:13:33 -0500 Robert Heller <heller@xxxxxxxxxxxx> wrote:
>
> >
> > I have two computers: both running CentOS 6.7, 64-bit, with
> > kernel 2.6.32-573.12.1.el6.x86_64. One is a laptop with an 2 core Intel
> > processor and the other is a desktop machine with a 4 core AMD processor. Both
> > with selinux enabled.
> >
> > I have a USB serial port device (a RR-CirKits LCC-Buffer USB). On the desktop
> > I am getting this error:
> >
> > sauron.deepsoft.com% sudo minicom
> > Device /dev/ttyACM0 access failed: No such file or directory.
> > sauron.deepsoft.com% dir -lZ /dev/ttyACM0
> > crw-rw----. root dialout system_u:object_r:tty_device_t:s0 /dev/ttyACM0
> >
> > But it is working on the laptop!
> >
> > gollum.deepsoft.com% dir -lZ /dev/ttyACM1
> > crw-rw----. root dialout system_u:object_r:tty_device_t:s0 /dev/ttyACM1
> >
> > Same kernel, same device (except it is showing up as ttyACM1 on the laptop).
> >
> > What is going on here?
> >
> >
> >
>
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Custom Software Services
http://www.deepsoft.com/ -- Linux Administration Services
heller@xxxxxxxxxxxx -- Webhosting Services
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