[gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[Thomas Drueke]

Hi,

I installed KDE 4.5.1 over the weekend following the
"remove-all-old-kde-packages-first" approach on the gentoo webpage. So
far everything seems to be fine except one thing.

When I type "su -" in konsole it takes 20-30 seconds to complete.
Doing the same on a text console the command completes immediately.

I don't have NIS or LDAP enabled. "strace su -" came back with an
authentication failure immediately so no much info from there.
Also "top" didn't show any suspicious process consuming the time.

I found a thread from may which might be related to my observation
("KDE takes ages to show password screen after suspend").
The solution there was to upgrade to KDE 4.4.4 which does not fit here.
Google didn't show much on this topic as well.

Any ideas what might cause the delay or how to get more close to the
root cause ?

Regards,
Thomas

Re: [gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[Yohan Pereira]

On Monday 20 September 2010 11:38:15 pm Thomas Drueke wrote:
> Hi,
> 
> I installed KDE 4.5.1 over the weekend following the
> "remove-all-old-kde-packages-first" approach on the gentoo webpage. So
> far everything seems to be fine except one thing.
> 
> When I type "su -" in konsole it takes 20-30 seconds to complete.
> Doing the same on a text console the command completes immediately.

odd im running 4.5.1 and dont experince this.
 
> Any ideas what might cause the delay or how to get more close to the
> root cause ?

you could try it on xterm or any other terminal emulator for that matter. 

-- 
- Yohan Pereira.

Re: [gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[Alan McKinnon]

Apparently, though unproven, at 20:08 on Monday 20 September 2010, Thomas 
Drueke did opine thusly:

> Hi,
> 
> I installed KDE 4.5.1 over the weekend following the
> "remove-all-old-kde-packages-first" approach on the gentoo webpage. So
> far everything seems to be fine except one thing.
> 
> When I type "su -" in konsole it takes 20-30 seconds to complete.
> Doing the same on a text console the command completes immediately.
> 
> I don't have NIS or LDAP enabled. "strace su -" came back with an
> authentication failure immediately so no much info from there.
> Also "top" didn't show any suspicious process consuming the time.
> 
> I found a thread from may which might be related to my observation
> ("KDE takes ages to show password screen after suspend").
> The solution there was to upgrade to KDE 4.4.4 which does not fit here.
> Google didn't show much on this topic as well.
> 
> Any ideas what might cause the delay or how to get more close to the
> root cause ?


20-30 second delays due to DNS timeouts have hit me so many times it's always 
the first thing I check, even when it seems irrelevant.

Does your machine have a local hostname, and do you have an entry for it in 
either DNS or /etc/hosts?


-- 
alan dot mckinnon at gmail dot com

Re: [gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[Thomas Drueke]

Thanks for hints, but no luck so far.

Yohan, using xterm instead of konsole results in the same delay.

Alan, hosts contains the hostname (FQDN) for eth0 and also alocalhost
entry. Plus wireshark didn't show any network traffic during the delay
(for both eth0 and lo).

Is there any of the new services from KDE 4 which requires some
configuration concerning DNS or similar network services ?

Regards,
Thomas

Am 20.09.2010 23:11, schrieb Alan McKinnon:
> Apparently, though unproven, at 20:08 on Monday 20 September 2010, Thomas 
> Drueke did opine thusly:
> 
>> Hi,
>>
>> I installed KDE 4.5.1 over the weekend following the
>> "remove-all-old-kde-packages-first" approach on the gentoo webpage. So
>> far everything seems to be fine except one thing.
>>
>> When I type "su -" in konsole it takes 20-30 seconds to complete.
>> Doing the same on a text console the command completes immediately.
>>
>> I don't have NIS or LDAP enabled. "strace su -" came back with an
>> authentication failure immediately so no much info from there.
>> Also "top" didn't show any suspicious process consuming the time.
>>
>> I found a thread from may which might be related to my observation
>> ("KDE takes ages to show password screen after suspend").
>> The solution there was to upgrade to KDE 4.4.4 which does not fit here.
>> Google didn't show much on this topic as well.
>>
>> Any ideas what might cause the delay or how to get more close to the
>> root cause ?
> 
> 
> 20-30 second delays due to DNS timeouts have hit me so many times it's always 
> the first thing I check, even when it seems irrelevant.
> 
> Does your machine have a local hostname, and do you have an entry for it in 
> either DNS or /etc/hosts?
> 
> 

Re: [gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[YoYo Siska]

On Mon, Sep 20, 2010 at 11:53:34PM +0200, Thomas Drueke wrote:
> Thanks for hints, but no luck so far.
> 
> Yohan, using xterm instead of konsole results in the same delay.

To rule some other things out, you could also try:
unset DISPLAY
su -

DISPLAY is one of the differences between a text konsole and anything
under X... Might be that some bashrc/profile script tries to do
something with X if it sees DISPLAY, but isn't able to connect to X  under
root... (maybe some xauth stuff..)

yoyo

> 
> Alan, hosts contains the hostname (FQDN) for eth0 and also alocalhost
> entry. Plus wireshark didn't show any network traffic during the delay
> (for both eth0 and lo).
> 
> Is there any of the new services from KDE 4 which requires some
> configuration concerning DNS or similar network services ?
> 
> Regards,
> Thomas
> 
> Am 20.09.2010 23:11, schrieb Alan McKinnon:
> > Apparently, though unproven, at 20:08 on Monday 20 September 2010, Thomas 
> > Drueke did opine thusly:
> > 
> >> Hi,
> >>
> >> I installed KDE 4.5.1 over the weekend following the
> >> "remove-all-old-kde-packages-first" approach on the gentoo webpage. So
> >> far everything seems to be fine except one thing.
> >>
> >> When I type "su -" in konsole it takes 20-30 seconds to complete.
> >> Doing the same on a text console the command completes immediately.
> >>
> >> I don't have NIS or LDAP enabled. "strace su -" came back with an
> >> authentication failure immediately so no much info from there.
> >> Also "top" didn't show any suspicious process consuming the time.
> >>
> >> I found a thread from may which might be related to my observation
> >> ("KDE takes ages to show password screen after suspend").
> >> The solution there was to upgrade to KDE 4.4.4 which does not fit here.
> >> Google didn't show much on this topic as well.
> >>
> >> Any ideas what might cause the delay or how to get more close to the
> >> root cause ?
> > 
> > 
> > 20-30 second delays due to DNS timeouts have hit me so many times it's always 
> > the first thing I check, even when it seems irrelevant.
> > 
> > Does your machine have a local hostname, and do you have an entry for it in 
> > either DNS or /etc/hosts?
> > 
> > 
> 

Re: [gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[Thomas Drueke]

Thanks for the hint.

"unset DISPLAY" let "su -" complete immediately.

I'll check my bashrc/profile + xauth related things to see what might
cause this.

Thomas

Am 21.09.2010 12:10, schrieb YoYo Siska:
> On Mon, Sep 20, 2010 at 11:53:34PM +0200, Thomas Drueke wrote:
>> Thanks for hints, but no luck so far.
>>
>> Yohan, using xterm instead of konsole results in the same delay.
> 
> To rule some other things out, you could also try:
> unset DISPLAY
> su -
> 
> DISPLAY is one of the differences between a text konsole and anything
> under X... Might be that some bashrc/profile script tries to do
> something with X if it sees DISPLAY, but isn't able to connect to X  under
> root... (maybe some xauth stuff..)
> 
> yoyo
> 
>>
>> Alan, hosts contains the hostname (FQDN) for eth0 and also alocalhost
>> entry. Plus wireshark didn't show any network traffic during the delay
>> (for both eth0 and lo).
>>
>> Is there any of the new services from KDE 4 which requires some
>> configuration concerning DNS or similar network services ?
>>
>> Regards,
>> Thomas
>>
>> Am 20.09.2010 23:11, schrieb Alan McKinnon:
>>> Apparently, though unproven, at 20:08 on Monday 20 September 2010, Thomas 
>>> Drueke did opine thusly:
>>>
>>>> Hi,
>>>>
>>>> I installed KDE 4.5.1 over the weekend following the
>>>> "remove-all-old-kde-packages-first" approach on the gentoo webpage. So
>>>> far everything seems to be fine except one thing.
>>>>
>>>> When I type "su -" in konsole it takes 20-30 seconds to complete.
>>>> Doing the same on a text console the command completes immediately.
>>>>
>>>> I don't have NIS or LDAP enabled. "strace su -" came back with an
>>>> authentication failure immediately so no much info from there.
>>>> Also "top" didn't show any suspicious process consuming the time.
>>>>
>>>> I found a thread from may which might be related to my observation
>>>> ("KDE takes ages to show password screen after suspend").
>>>> The solution there was to upgrade to KDE 4.4.4 which does not fit here.
>>>> Google didn't show much on this topic as well.
>>>>
>>>> Any ideas what might cause the delay or how to get more close to the
>>>> root cause ?
>>>
>>>
>>> 20-30 second delays due to DNS timeouts have hit me so many times it's always 
>>> the first thing I check, even when it seems irrelevant.
>>>
>>> Does your machine have a local hostname, and do you have an entry for it in 
>>> either DNS or /etc/hosts?
>>>
>>>
>>
> 
> 
> 
> 

Re: [gentoo-user] su in konsole takes much longer to complete in KDE 4.5.1

[Thomas Drueke]

Just to let you know that I solved this (at least somehow) by using kdm
as login manager and no longer start KDE via .xinitrc/startkde. It seems
some more configuration/program-startup is done by kdm which solves this.

Thanks for your help.
Thomas

Am 21.09.2010 19:29, schrieb Thomas Drueke:
> Thanks for the hint.
> 
> "unset DISPLAY" let "su -" complete immediately.
> 
> I'll check my bashrc/profile + xauth related things to see what might
> cause this.
> 
> Thomas
> 
> Am 21.09.2010 12:10, schrieb YoYo Siska:
>> On Mon, Sep 20, 2010 at 11:53:34PM +0200, Thomas Drueke wrote:
>>> Thanks for hints, but no luck so far.
>>>
>>> Yohan, using xterm instead of konsole results in the same delay.
>>
>> To rule some other things out, you could also try:
>> unset DISPLAY
>> su -
>>
>> DISPLAY is one of the differences between a text konsole and anything
>> under X... Might be that some bashrc/profile script tries to do
>> something with X if it sees DISPLAY, but isn't able to connect to X  under
>> root... (maybe some xauth stuff..)
>>
>> yoyo
>>
>>>
>>> Alan, hosts contains the hostname (FQDN) for eth0 and also alocalhost
>>> entry. Plus wireshark didn't show any network traffic during the delay
>>> (for both eth0 and lo).
>>>
>>> Is there any of the new services from KDE 4 which requires some
>>> configuration concerning DNS or similar network services ?
>>>
>>> Regards,
>>> Thomas
>>>
>>> Am 20.09.2010 23:11, schrieb Alan McKinnon:
>>>> Apparently, though unproven, at 20:08 on Monday 20 September 2010, Thomas 
>>>> Drueke did opine thusly:
>>>>
>>>>> Hi,
>>>>>
>>>>> I installed KDE 4.5.1 over the weekend following the
>>>>> "remove-all-old-kde-packages-first" approach on the gentoo webpage. So
>>>>> far everything seems to be fine except one thing.
>>>>>
>>>>> When I type "su -" in konsole it takes 20-30 seconds to complete.
>>>>> Doing the same on a text console the command completes immediately.
>>>>>
>>>>> I don't have NIS or LDAP enabled. "strace su -" came back with an
>>>>> authentication failure immediately so no much info from there.
>>>>> Also "top" didn't show any suspicious process consuming the time.
>>>>>
>>>>> I found a thread from may which might be related to my observation
>>>>> ("KDE takes ages to show password screen after suspend").
>>>>> The solution there was to upgrade to KDE 4.4.4 which does not fit here.
>>>>> Google didn't show much on this topic as well.
>>>>>
>>>>> Any ideas what might cause the delay or how to get more close to the
>>>>> root cause ?
>>>>
>>>>
>>>> 20-30 second delays due to DNS timeouts have hit me so many times it's always 
>>>> the first thing I check, even when it seems irrelevant.
>>>>
>>>> Does your machine have a local hostname, and do you have an entry for it in 
>>>> either DNS or /etc/hosts?
>>>>
>>>>
>>>
>>
>>
>>
>>
> 
>