[K12OSN] HP T5740 boot panic

[William Fragakis]

Not knowing what Jim just told you, I ended up using a Debian boot
image. Installed LTSP in a Debian VM and then copied it over.

If you need the image/files, etc, email me off list. Additional quirk is
that you have to make it ignore what it thinks is its built in screen
and use the vga connection instead. Otherwise, you end up on a "second"
screen. Add  video=LVDS-1:d to the boot parameters in your files
in /var/lib/tftpboot/ltsp/your_image/pxelinux.cfg

e.g. 
label ltsp-NFS
menu label LTSP, using NFS
kernel vmlinuz-3.10-3-486
append ro initrd=initrd.img-3.10-3-486 init=/sbin/init-ltsp quiet root=/dev/nfs ip=dhcp boot=nfs video=LVDS-1:d
ipappend 2

(append is all one line until ipappend in case your email reader wraps it)

They are solid units. Typing on one presently.

Regards,
William

On Fri, 2014-04-18 at 12:00 -0400, k12osn-request at redhat.com wrote:
> 
> Message: 5
> Date: Fri, 18 Apr 2014 11:02:20 -0400
> From: Jim Kinney <jim.kinney at gmail.com>
> To: "Support list for open source software in schools."
>         <k12osn at redhat.com>
> Subject: Re: [K12OSN] HP T5740 boot panic
> Message-ID:
>         <CAEo=5Pzf826jVduG5NgMcvdY9vcf
> +mEo5yyeWpjz1SsmCnhSNQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> Some Broadcom nics are closed source driver issues (Grr!). You may
> have one
> of these. You'll need to use a module from rpmfusion-nonfree to get
> the nic
> to work on the TC. That will require a boot kernel rebuild and a
> rebuild of
> the initrd. The Ubuntu image works because they are not based in the
> US and
> often ship code that is not freely available fro distribution.
> 
> 
> On Fri, Apr 18, 2014 at 10:52 AM, Barry Cisna
> <cisna-barry at wc235.k12.il.us>wrote:
> 
> > Hello All,
> >
> > Just purchased a new HP T5740 TC to test with,to use with about a
> one
> > year old install of (LTSP 6.0 SL client).
> >
> > The unit kernel panics at boot,so I updated the bios to the latest
> > available bios from HP, with fingers crossed hoping possibly the
> later
> > bios would remedy the boot panic.Of course this didn't change the
> > situation.
> >
> > After doing some searching it appears the Broadcom nic in these
> units is
> > the snag on the boot process.
> > I have seen several workarounds to get these units to boot,mostly
> being
> > building an Ubuntu boot image to drop into the tftp dir on the
> server.
> >
> > We have had several of the HP T5730's that would boot up fine out of
> the
> > box.
> >
> > Anyone tried the HP T5740  Atom 1.6 ghz ,Intel i915 video,broadcom
> > nic,atheros wireless.?
> >
> > Thank You,
> > Barry
> >
> >