OK, here is what worked on Lubuntu to blacklist the module of interest:
In LXTERMINAL:
sudo leafpad /opt/ltsp/i386/etc/modprobe.d/blacklist.conf
Add this to the end of the file and save:
blacklist i2c_piix4
Then in LXTERMINAL once again:
sudo ltsp-update-image
In my application, the host/server and terminal/client are both i386
(32-bit), but if the server were 64-bit and the client 32-bit, then I
would have run instead:
sudo ltsp-update-image --arch i386
(The --arch switch is just as for the ltsp-build-client command for that
architecture scenario.)
By the way, nowhere could I find a document with this sort of
instruction for blacklisting an LTSP module. I found such instructions
for the standalone desktop, and I found other instructions that made
reference to updating the image under various circumstances, but it was
only by way of piecing together such information that I arrived at the
above. So I'll post afresh on the more general topic for the sake of
other newbies to come. (When you are new to this, nothing can be taken
for granted, and nothing is obvious!)
*** But one follow-up question ***: My solution here works only for the
case where all clients/terminals have the same problem, and where it is
believed that leaving the SMBus controller disabled will do no harm.
But if that were not the case, is there provision for generating and
assigning more than one image FOR THE SAME ARCHITECTURE?
On 7/27/2012 8:39 PM, PRP Company wrote:
For an LTSP network where all the clients show this client boot error,
can I
sudo gedit /opt/ltsp/i386/etc/modprobe.d/blacklist.conf
then add
blacklist i2c_piix4
to the blacklist and save,
then
sudo ltsp-build-client --arch i386
to rebuild my LTSP client image?
Is that likely to fix the problem?
--John Hupp
P.S. I have been on mail lists where the convention was to reply with
new material at the top of the email, others where they wanted all
posts in plain text (no rich text or HTML), and I think others where
they wanted all posts trimmed of previous material. One person on
this list declared that the accepted practice here was to add new
material to the bottom of the email, following all the older
material. Can anyone confirm or deny?
(As you can see from this email, I've been using the new-stuff-on-top
approach.)
On 7/27/2012 1:18 PM, PRP Company wrote:
Addendum: Even though I reference Lubuntu 12.04, I find that the
behavior is exactly the same under Edubuntu 12.04.
On 7/25/2012 2:56 PM, PRP Company wrote:
A refined request:
The research that I have done on this has not shown that this
condition ever did any harm. So instead of asking how to enable the
controller somehow, I would now ask: How can I modify the image
being downloaded to the terminal so that the error does not appear?
For instance, can I blacklist a module in the image?
--John Hupp
On 7/23/2012 9:41 PM, PRP Company wrote:
Hi, all.
Continuing to work through my newbie questions on my first LTSP setup:
After Lubuntu 12.04 has begun booting on an eMachines iTower 500i
client, it generates the error:
/piix4_smbus 0000:00:0.7.3: Host SMBus controller not enabled/
But it continues booting and, so far as I can tell at the moment,
everything works.
When the machine is then shut down or rebooted, a similar message
appears:
/saned disabled; edit /etc/default/saned/
/Host SMBus controller not enabled/
Even if everything works, these are disturbing messages.
Some online posts associate these messages with various things that
don't work, so it may be that I simply have not discovered the
damage yet.
For situations not involving LTSP, a couple sources prescribe adding
/blacklist i2c_piix4/
to /etc/modprobe.d/blacklist.conf
I did this on the LTSP server, but whatever the effect on the
server, it did not solve the problem on the client.
Other sources also recommend upgrading the BIOS to solve this
problem. They note that some BIOS implementations leave the SMBus
controller disabled by default. I did upgrade the BIOS on the
eMachines, but it did not fix the problem, and I did not recognize
any BIOS settings that might allow me to enable the SMBus controller.
I think that the error reports refer to the state of the eMachines
PC, since another LTSP client does not generate the error.
Anyone recognize this problem and have a solution?
--John Hupp
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Exclusive live event will cover all the ways today's security and
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_____________________________________________________________________
Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
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For additional LTSP help, try #ltsp channel on irc.freenode.net
------------------------------------------------------------------------------
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Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats.http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_____________________________________________________________________
Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
For additional LTSP help, try #ltsp channel on irc.freenode.net
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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