ubuntu-users Digest, Vol 85, Issue 175

gde.dony at gmail.com gde.dony at gmail.com
Tue Sep 27 07:38:03 UTC 2011


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Subject: ubuntu-users Digest, Vol 85, Issue 175

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Today's Topics:

   1. Re: UEFI secure boot (Avi Greenbury)
   2. Re: I've messed something up now (Knute Johnson)
   3. Re: VLC image - voice delay (Basil Chupin)
   4. Re: Nvidia driver problem (Basil Chupin)
   5. Re: VLC image - voice delay (NoOp)
   6. Re: UEFI secure boot (Ernest Doub)
   7. Re: Accessing non-Flash video (Pritam Baral)


----------------------------------------------------------------------

Message: 1
Date: Tue, 27 Sep 2011 00:29:14 +0100
From: Avi Greenbury <lists at avi.co>
To: ubuntu-users at lists.ubuntu.com
Subject: Re: UEFI secure boot
Message-ID: <20110927002914.408af4fc at amazing>
Content-Type: text/plain; charset=UTF-8

Rashkae wrote:

> On 09/26/2011 06:53 PM, compdoc wrote:
> > http://www.theregister.co.uk/2011/09/23/ms_denies_uefi_lock_in/
> >
> 
> Am I the only one who thinks this is actually a good idea from MS?

I'd not seen it attributed to MS before, but no, it makes sense to me.
It'd be nice to avoid the trust issues that have befallen SSL on the
web, though I do see that extending the trust in the manufacturer to
make good hardware as far as entrusting them to certify only good
software is much more logical than deciding that arbitrary companies
capable of generating random numbers are to be trusted on no prior
grounds.

> If PC makers wanted to lock pc's they could have done long before now.

I don't think they do directly, but they want Windows cheap and I don't
really see why they'd necessarily not remove some toggle control in
order to carry on paying ?5 for their Windows licenses.

> 4.  What I would like to see is OEM's making BIOS that can sign their 
> own boot sectors.  I can see no reason why this wouldn't be 
> implemented.  Basically, if a Boot sector/MBR gets changed in a
> system with Secure boot enabled, the modified code will not boot
> until someone with the BIOS password goes in and specifically tells
> the bios to sign code The flaw with this idea, I suppose, it might be
> possible for an attacker to read the private key from the BIOS, and
> sign itself when installing.  

The bigger flaw is that you're assuming the user is in a position to
make that judgement as to whether to allow the code to run, and in a
position where they actually care. Neither of these are generally true,
as we can see with attitudes towards current, conventional, malware.

-- 
Avi



------------------------------

Message: 2
Date: Mon, 26 Sep 2011 16:50:02 -0700
From: Knute Johnson <ubuntu at knutejohnson.com>
To: Firesam <ubuntu at e17th.com>, ubuntu-users at lists.ubuntu.com
Subject: Re: I've messed something up now
Message-ID: <4E810FAA.6040007 at knutejohnson.com>
Content-Type: text/plain; charset=UTF-8; format=flowed

On 9/26/2011 11:02 AM, Firesam wrote:
> If you are using gui you can go to users and groups and add a user to
> see all the defaults you would normally have on your system.

Thanks for that thought but it is a server installation, no GUI.

-- 

Knute Johnson



------------------------------

Message: 3
Date: Tue, 27 Sep 2011 11:21:04 +1000
From: Basil Chupin <blchupin at iinet.net.au>
To: ubuntu-users at lists.ubuntu.com
Subject: Re: VLC image - voice delay
Message-ID: <4E812500.90705 at iinet.net.au>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 27/09/11 09:21, Hernan Saltiel wrote:
>
>
> On Mon, Sep 26, 2011 at 6:25 AM, Ric Moore <wayward4now at gmail.com 
> <mailto:wayward4now at gmail.com>> wrote:
>
>     On 09/26/2011 12:05 AM, Hernan Saltiel wrote:
>
>         Hi!
>         After upgrading Ubuntu from 10.10 to 11.04 (32 bits), VLC is
>         starting to
>         have some strange behavior, slowing down images over voices.
>         The, when I see an Xvid video that before the upgrade worked,
>         it has a
>         little delay. It's annoying to see a movie or a music clip and
>         know that an
>         actor says something and a second after that the voice says
>         what he said a
>         second ago...
>         Please, let me know if there is some workaround for this.
>         Thanks a lot for your time and attention.
>         Best regards,
>
>
>     I experienced that after ripping a DVD to an iso file to my
>     harddrive. When VLC played it back, the sound was ~slightly~
>     delayed, enough to be annoying. So, I tried a different ripper. I
>     used handbrake and ripped it to an mp4 file. Plays just peachy.
>
>     I didn't thing such a tried and true multimedia app like VLC would
>     just fold up on me. Turns out it didn't, it was the quality of the
>     file I was playing back that didn't have the sound synced properly
>     to the video.
>
>     YMMV though, is it doing that to ALL of your files or just a few?
>     Store-bought or homegrown? :) Ric
>
>
> Hi Ric!
> This is happening with most of my AVI files.
> The same files were working great with VLC just before the upgrade.
> I think it's solved now...I tried with Banshee, and it worked. Then I 
> tried again with VLC, and it worked not. Then I rebooted, and now 
> everything is working just fine.
> Mysteries of life...
> Thanks!
> Best regards,
>
> HeCSa.
>

Which vlc are you running - the one from ubuntu repos or the one from 
videolan itself? I have always had problems (eg, with vlc not even 
working) with the ubuntu vlc. Go to videolan.org and use the 1-click 
install and install their version.

BC

-- 
You can always count on Americans to do the right thing - after they've tried everything else.
                                 Sir Winston Churchill




------------------------------

Message: 4
Date: Tue, 27 Sep 2011 11:24:25 +1000
From: Basil Chupin <blchupin at iinet.net.au>
To: ubuntu-users at lists.ubuntu.com
Subject: Re: Nvidia driver problem
Message-ID: <4E8125C9.5010705 at iinet.net.au>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 26/09/11 22:12, Alan Pope wrote:
> On 26 September 2011 12:46, Basil Chupin<blchupin at iinet.net.au>  wrote:
>> If my memory serves me correctly, I think there is command line instruction
>> which will create a very basic xorg.conf file but which does not reflect
>> what is actually installed on the system. But here my memory fails me....I
>> don't remember what that command line is :-( .
>>
> People used to use "dpkg --configure xserver-xorg", but this doesn't
> serve much use anymore.
>
> For nvidia specifically though there is:-
>
> "sudo nvidia-config" which will make a basic one.
>
> Al.

Ah, thanks, that's the one. I'll write this into my "little black book" 
for future reference :-) .

BC

-- 
You can always count on Americans to do the right thing - after they've tried everything else.
                                 Sir Winston Churchill




------------------------------

Message: 5
Date: Mon, 26 Sep 2011 18:35:10 -0700
From: NoOp <glgxg at sbcglobal.net>
To: ubuntu-users at lists.ubuntu.com
Subject: Re: VLC image - voice delay
Message-ID: <j5r98g$3tb$1 at dough.gmane.org>
Content-Type: text/plain; charset=ISO-8859-1

On 09/26/2011 06:21 PM, Basil Chupin wrote:
> On 27/09/11 09:21, Hernan Saltiel wrote:
...
>> Hi Ric!
>> This is happening with most of my AVI files.
>> The same files were working great with VLC just before the upgrade.
>> I think it's solved now...I tried with Banshee, and it worked. Then I 
>> tried again with VLC, and it worked not. Then I rebooted, and now 
>> everything is working just fine.
>> Mysteries of life...
>> Thanks!
>> Best regards,
>>
>> HeCSa.
>>
> 
> Which vlc are you running - the one from ubuntu repos or the one from 
> videolan itself? I have always had problems (eg, with vlc not even 
> working) with the ubuntu vlc. Go to videolan.org and use the 1-click 
> install and install their version.
> 
> BC
> 

Why? VLC (natty and maverick from the repos) works just fine for me:
$ apt-cache policy vlc
vlc:
  Installed: 1.1.9-1ubuntu1.3
  Candidate: 1.1.9-1ubuntu1.3
  Version table:
 *** 1.1.9-1ubuntu1.3 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty-updates/universe
i386 Packages
        500 http://us.archive.ubuntu.com/ubuntu/ natty-security/universe
i386 Packages
        100 /var/lib/dpkg/status
     1.1.9-1ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/universe i386
Packages

$ apt-cache policy vlc
vlc:
  Installed: 1.1.4-1ubuntu1.7
  Candidate: 1.1.4-1ubuntu1.7
  Version table:
 *** 1.1.4-1ubuntu1.7 0
        500 http://archive.ubuntu.com/ubuntu/ maverick-updates/universe
i386 Packages
        500 http://security.ubuntu.com/ubuntu/
maverick-security/universe i386 Packages
        100 /var/lib/dpkg/status
     1.1.4-1ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ maverick/universe i386
Packages





------------------------------

Message: 6
Date: Mon, 26 Sep 2011 18:53:01 -0700
From: Ernest Doub <hideserted at gmail.com>
To: "Ubuntu user technical support,	not for general discussions"
	<ubuntu-users at lists.ubuntu.com>
Subject: Re: UEFI secure boot
Message-ID:
	<CABGXaR6Vuuwy3at7nXi8VhkpZ_0AVuGE29Cv+jL1TDugqrCVnQ at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

On Mon, Sep 26, 2011 at 4:29 PM, Avi Greenbury <lists at avi.co> wrote:

> Rashkae wrote:
>
> > On 09/26/2011 06:53 PM, compdoc wrote:
> > > http://www.theregister.co.uk/2011/09/23/ms_denies_uefi_lock_in/
> > >
> >
> > Am I the only one who thinks this is actually a good idea from MS?
>
> I'd not seen it attributed to MS before, but no, it makes sense to me.
> It'd be nice to avoid the trust issues that have befallen SSL on the
> web, though I do see that extending the trust in the manufacturer to
> make good hardware as far as entrusting them to certify only good
> software is much more logical than deciding that arbitrary companies
> capable of generating random numbers are to be trusted on no prior
> grounds.
>
> > If PC makers wanted to lock pc's they could have done long before now.
>
> I don't think they do directly, but they want Windows cheap and I don't
> really see why they'd necessarily not remove some toggle control in
> order to carry on paying ?5 for their Windows licenses.
>
> > 4.  What I would like to see is OEM's making BIOS that can sign their
> > own boot sectors.  I can see no reason why this wouldn't be
> > implemented.  Basically, if a Boot sector/MBR gets changed in a
> > system with Secure boot enabled, the modified code will not boot
> > until someone with the BIOS password goes in and specifically tells
> > the bios to sign code The flaw with this idea, I suppose, it might be
> > possible for an attacker to read the private key from the BIOS, and
> > sign itself when installing.
>
> The bigger flaw is that you're assuming the user is in a position to
> make that judgement as to whether to allow the code to run, and in a
> position where they actually care. Neither of these are generally true,
> as we can see with attitudes towards current, conventional, malware.
>
> --
> Avi
>
> --
> ubuntu-users mailing list
> ubuntu-users at lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>


The thought/question has occurred to tiny little NOOB brain that what is to
stop the attacker from writing a program to install a virtual box on top of
the secure layer that mimics the users system with all the inimical
spyware/keyloggers/etc. running in the background?
With these new multi-processor systems there are a lot more un-used clock
cycles available for malware to use without slowing most users down to the
point where they actually notice.
-- 
<http://linuxcounter.net/cert/544489.png>Accidental deaths by firearms
account for less than 1% of the 30,000.  There are three times as many
medical mistake deaths in the US than there are accidental gun deaths.
Perhaps we need safety locks on doctors and nurses?

<http://linuxcounter.net/cert/544489.png>
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Message: 7
Date: Tue, 27 Sep 2011 07:24:49 +0530
From: Pritam Baral <pritam at pritambaral.co.cc>
To: "Ubuntu user technical support,	not for general discussions"
	<ubuntu-users at lists.ubuntu.com>
Subject: Re: Accessing non-Flash video
Message-ID:
	<CA+vMK7N_KDr_vWtuy4oT3eP1055jos4K_04svBTjxK9vKNGefQ at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

You can use Minitube. It's in the repos

*Regards,*

*Chhatoi Pritam Baral*


On Mon, Sep 26, 2011 at 13:54, Douglas Saylor <absdoug at gmail.com> wrote:

> On Sun, Sep 18, 2011 at 12:42 PM, Avi Greenbury <lists at avi.co> wrote:
> >
> > The least-frustration way is probably just to sign up here:
> >
> > http://www.youtube.com/html5
> >
> > It's cookie based, so you don't need to be signed in.
>
> Thanks, I did do that BUT there are STILL videos even on YouTube that
> seem to require Flash but when forwarded to iPhone play fine.
>
> --
> ubuntu-users mailing list
> ubuntu-users at lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>
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