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 PCw/ 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
On 12/7/2012 2:18 PM, John Hupp wrote:
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.
On 12/7/2012 11:32 AM, John Hupp wrote:
Read on about Lubuntu 12.10 after this intro: I have been
troubleshooting a behavior in which many LTSP clients on my Lubuntu
12.10 LTSP server fail to boot. They stall after the Lubuntu splash
screen at a blank, black screen.
But 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 Valerio P is troubleshooting (below) 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 I just ran the Live CD on had run both Lubuntu and Ubuntu
12.04 without such a behavior.
On 12/4/2012 4:16 PM, John Hupp wrote:
> Valerio Pachera on the Edubuntu list has been troubleshooting what
seems like the very same problem. His thread came apart somehow but
you can see all the posts here:
https://lists.ubuntu.com/archives/edubuntu-users/2012-December/thread.html
>
> He got his clients working *most* of the time by disabling NBD
compression. (Undoubtedly performance has taken a hit.) He refers
to documentation of a previous problem with NBD compression on fat
clients which presumably was solved, but now gives the appearance of
having returned. See
https://help.ubuntu.com/community/UbuntuLTSP/FatClients#Reenabling_NBD_compression.
However, one LTSP gurureplied that it was likely that NBD compression
was not the cause of the problem, but was merely allow the real cause
to manifest this behavior.
>
> I checked out the NBD compression issue nonetheless. On my server,
there was no /etc/ltsp/ltsp-update-image.conf file, but I created
one, added the NO_COMP line, and updated the image. This did not
solve the problem with any clients I tested. Though our respective
setups are different on a number of points, detailed pretty well
here:
https://lists.ubuntu.com/archives/edubuntu-users/2012-December/007206.html
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