client specific problem

[John Hupp]

On 12/5/2012 5:48 AM, Valerio Pachera wrote:
> 2012/12/4 Alkis Georgopoulos <alkisg at gmail.com>:
>> I haven't yet seen a single case where NBD compression caused problems.
>> But I've seen numerous cases where NBD compression made *another*
>> problem move obvious, due to the data validation it does.
> The first thing I've done was testing the ram memory by memtest and it was ok.
> I've been testing the client connecting it directly to the eth0 of the
> server, so no possible switch issues;
> the behavior is the same of the class room.
> I also tried to add a simple rtl8129 network card and boot by
> etherboot. No changes.
> I tried to change video card or force vesa. No significant changes
> I tried another pc with the same motherboard and it behaves the same.
> I also updated the bios.
>
> To esclude ndb related problem I reverted to nfs, but no changes there either.
>    https://help.ubuntu.com/community/UbuntuLTSP/LTSPWithoutNFS
>
> Here is my lspci
> ----------
> 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM
> Controller (rev 10)
> 00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express
> Integrated Graphics Controller (rev 10)
> 00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High
> Definition Audio Controller (rev 01)
> 00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express
> Port 1 (rev 01)
> 00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express
> Port 2 (rev 01)
> 00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI
> Controller #1 (rev 01)
> 00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI
> Controller #2 (rev 01)
> 00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI
> Controller #3 (rev 01)
> 00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI
> Controller #4 (rev 01)
> 00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI
> Controller (rev 01)
> 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
> 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC
> Interface Bridge (rev 01)
> 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE
> Controller (rev 01)
> 00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA
> Controller [IDE mode] (rev 01)
> 00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 01)
> 01:00.0 Ethernet controller: Atheros Communications Inc.
> AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0)
> -----------
>
Regarding what seems like the same LTSP client problem that I'm still 
troubleshooting here: One of the PC's that fails to boot as an LTSP 
client also has enough resources to boot the Lubuntu 12.10 Live CD, so I 
tried that, and I found that it fails to boot with the same stalled 
blank, black screen after the Lubuntu splash screen.  I left it like 
that for ~ 15 minutes to check for an 8-minute stall (which another user 
reported elsewhere), and it didn't budge.

Since you are troubleshooting what seems like the same behavior with 
LTSP clients on Edu/Ubuntu 12.04 servers, and since I show the same 
behavior also on a Lubuntu 12.10 Live CD, I now wonder if this is a 
*buntu 12.04/12.10 problem related to certain chipsets or video chips.  
Complicating that observation somewhat, I note this machine that I just 
ran the Live CD on had run both Lubuntu and Ubuntu 12.04 without such a 
behavior.
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