[Samba] After Windows login black screen with mouse cursor

Tim

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Feb 27, 2015, 3:33:49 AM2/27/15

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Hello,

I did an update from 4.1.16 to 4.1.17 yesterday and had some problems
with it (using sernet package). But I think it is fine now: Replication
works so far. Samba-tool drs showrepl has no failure and I created a
user and it was instantly available on both DCs.

This morning a lot of clients had the following issue:
They were started as usual and the users do their login. But after this
a black screen appears where only the mouse cursor is shown. It lasts 10
to 15min until the normal desktop appears.

First I suspected two new installed Windows updates (KB3006137 and
KB3021917) but after deinstallation nothing changed.

I use roaming profiles via gpo and folder redirection for AppData,
Desktop, Documents and Favorites.

One more note: One client had this two days ago with 4.1.16.

There is a failure on each client:
Event ID 5719, NETLOGON, This computer was not able to set up a secure
session with a domain controller in domain Domain due to the following:
There are currently no logon servers available to service the logon
request....

Is this possibly causing the headache?

Any hints are welcome.

Thanks
Tim
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Tim

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Feb 27, 2015, 4:58:22 AM2/27/15

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In addition to what I have written I should say that I enabled SSSD on
the DCs this week. Possibly this is the reason for this and sssd causes
winbind problems on a DC?

I will disable it to test.

Rowland Penny

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Feb 27, 2015, 5:02:24 AM2/27/15

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Hi, what version of sssd, I forget the version it was added at, but sssd
now comes with its own version of winbind and this could be colliding
with samba's winbind.

Rowland

Tim

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Feb 27, 2015, 5:14:48 AM2/27/15

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And this can cause such behaviour?

Rowland Penny

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Feb 27, 2015, 5:17:48 AM2/27/15

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Don't know, but it is something to check, I suppose you have ruled out
it being virus related.

Sketch

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Feb 27, 2015, 8:28:37 AM2/27/15

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On Fri, 27 Feb 2015, Tim wrote:

> And this can cause such behaviour?

No, SSSD is only used for local authentication on the machine. Samba 4 as
an AD DC is only going to be serving information from it's own LDAP
database.

BTW, I use SSSD on my domain controllers with no issues.

> Am 27. Februar 2015 11:01:15 MEZ, schrieb Rowland Penny <rowlan...@googlemail.com>:
>> On 27/02/15 09:50, Tim wrote:
>>> In addition to what I have written I should say that I enabled SSSD
>> on
>>> the DCs this week. Possibly this is the reason for this and sssd
>>> causes winbind problems on a DC?

Tim

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Feb 27, 2015, 9:01:38 AM2/27/15

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It's becoming really weird. I moved a client to a OU with no GPOs at all.

"Please wait" lasts relatively long. "Welcome" too followed by black screen with mouse cursor only. No roaming profiles, no folder redirection.

Event logs seem to offer nothing.

Rowland Penny

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Feb 27, 2015, 9:10:45 AM2/27/15

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On 27/02/15 14:00, Tim wrote:
> It's becoming really weird. I moved a client to a OU with no GPOs at all.
>
> "Please wait" lasts relatively long. "Welcome" too followed by black screen with mouse cursor only. No roaming profiles, no folder redirection.
>
> Event logs seem to offer nothing.
>
> Am 27. Februar 2015 14:27:03 MEZ, schrieb Sketch <smb...@rednsx.org>:
>> On Fri, 27 Feb 2015, Tim wrote:
>>
>>> And this can cause such behaviour?
>> No, SSSD is only used for local authentication on the machine. Samba 4
>> as
>> an AD DC is only going to be serving information from it's own LDAP
>> database.
>>
>> BTW, I use SSSD on my domain controllers with no issues.
>>
>>> Am 27. Februar 2015 11:01:15 MEZ, schrieb Rowland Penny
>> <rowlan...@googlemail.com>:
>>>> On 27/02/15 09:50, Tim wrote:
>>>>> In addition to what I have written I should say that I enabled SSSD
>>>> on
>>>>> the DCs this week. Possibly this is the reason for this and sssd
>>>>> causes winbind problems on a DC?
>> --
>> To unsubscribe from this list go to the following URL and read the
>> instructions: https://lists.samba.org/mailman/options/samba

Not saying this is your problem, but have a look here:

http://www.darrenfoster.co.uk/windows-7-boots-to-black-screen-with-cursor-only/

Rowland

Tim

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Feb 27, 2015, 9:29:24 AM2/27/15

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I did some more tests. I got the functionality back after switching the client to OU computer and doing a restart.

It seems to depend on folder redirection.

Tim

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Feb 27, 2015, 10:13:40 AM2/27/15

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Found it! Folder redirection of Desktop worked so far. But now it got confused for some Rea's n I don't know.

Switched folder redirection back to local profile and it works again!

Should I add this to the wiki?

miguel...@sapo.pt

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Feb 27, 2015, 10:44:27 AM2/27/15

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> Found it! Folder redirection of Desktop worked so far. But now it
> got confused for some Rea's n I don't know.
>
> Switched folder redirection back to local profile and it works again!
>

This happened to me once. It means you had innapropriate permissions
on the redirection folders, at least the root folder.

A quick search for "folder redirection permissions" should provide the
information you need to configure it correctly.

Tim

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Feb 27, 2015, 11:28:20 AM2/27/15

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I checked that. All permissions are as advised as mentioned here:
https://msdn.microsoft.com/de-de/library/cc736916%28v=ws.10%29.aspx

So I believe, it's not that reason. It worked until Tuesday/Wednesday.
Suddenly that functionality disappeared. Redirection of AppData,
Documents an Favorites still works as expected.