On 12/7/2012 2:20 PM, John Hupp wrote:
On 12/7/2012 11:16 AM, John Hupp wrote:
On 12/5/2012 5:48 AM, Valerio Pachera wrote:
2012/12/4 Alkis Georgopoulos<alk...@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.
To give my supposition a bit more weight, I removed the discrete video
card from a working Lubuntu 12.10 machine and installed it in the
machine that fails both as a client and a standalone-with-Live-CD. It
then successfully booted the Live CD.
The card that worked was an old PCI Matrox Millennium II MGA 2164W.
The card that failed was a slightly newer AGP card with a Trident
3DImage 9850 chip.
An expanded list of what works and doesn't work for me (not
double-tested, and where not specified I'm listing chips rather than
card mfr/model):
Worked:
- PCI Matrox Millennium II MGA 2164W (PCI card)
- Intel 82810E (integrated)
- An ATI-based AGP card sold as a MIC E-G012-02-1214(B)
- ATI Rage 128 Pro (AGP card)
- ATI Rage 128 (AGP card)
- HP VectaVL PC w/ integrated video, probably either:
Matrox G250 2X AGP
Matrox Millennium G400 4X AGP
Partially Worked (got past the blank, black screen but then failed somehow):
- Diamond STL III S540 XTRM32M 82 (AGP card)
- Diamond Spdstr A50 with SiS 6326AGP chip (AGP card)
Failed:
- Trident 3DImage 9850 (AGP card)
- S3 Trio64V+ (PCI card)
- Diamond Viper with Power Weitek 9000/9001 and Oak Technology T9351
chips (PCI card)
- ATI Mach64 (PCI card)
- eMachines eTower 500i w/ integrated video, probably:
ATI Rage Pro Turbo 2X AGP
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