Can you see where (e.g. with a calltrace) the first lock happens and
where the second lock happens?

Cheers,
Waldo

Intel Corporation - Platform Software Engineering, UMG - Hillsboro,
Oregon

-----Original Message-----
From: ubuntu-mobile-bounces@lists.ubuntu.com
[mailto:ubuntu-mobile-bounces@lists.ubuntu.com] On Behalf Of Bryce
Harrington
Sent: Thursday, January 17, 2008 12:53 PM
To: Amit Kucheria
Cc: ubuntu-mobile@lists.ubuntu.com
Subject: Fix for -psb X issue

I've uploaded a fix for the -psb X issue to PPA. [1]

Yesterday, Amit and I found that a psbDRILock() routine was being called
twice; this routine requests a lock in the kernel, which works the first
time, but not the second.

So this morning, I disabled the second lock/unlock in -psb[2], and sure
enough, X came up and seems to be working as expected now[3].

Bryce

1: https://launchpad.net/~ubuntu-mobile/+archive
2: http://people.ubuntu.com/~bryce/UME/103_psb_debugs.patch
3: http://bryceharrington.org/drupal/ume-psb-fix

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See amit's comment: http://bryceharrington.org/drupal/node/31

On Thu, Jan 17, 2008 at 01:29:06PM -0800, Bastian, Waldo wrote:
> Can you see where (e.g. with a calltrace) the first lock happens and
> where the second lock happens?
>
> Cheers,
> Waldo
>
> Intel Corporation - Platform Software Engineering, UMG - Hillsboro,
> Oregon
>
> -----Original Message-----
> From: ubuntu-mobile-bounces@lists.ubuntu.com
> [mailto:ubuntu-mobile-bounces@lists.ubuntu.com] On Behalf Of Bryce
> Harrington
> Sent: Thursday, January 17, 2008 12:53 PM
> To: Amit Kucheria
> Cc: ubuntu-mobile@lists.ubuntu.com
> Subject: Fix for -psb X issue
>
> I've uploaded a fix for the -psb X issue to PPA. [1]
>
> Yesterday, Amit and I found that a psbDRILock() routine was being called
> twice; this routine requests a lock in the kernel, which works the first
> time, but not the second.
>
> So this morning, I disabled the second lock/unlock in -psb[2], and sure
> enough, X came up and seems to be working as expected now[3].
>
> Bryce
>
> 1: https://launchpad.net/~ubuntu-mobile/+archive
> 2: http://people.ubuntu.com/~bryce/UME/103_psb_debugs.patch
> 3: http://bryceharrington.org/drupal/ume-psb-fix
>
> --
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> Ubuntu-mobile@lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile

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I will forward to TG for this issue.

Thanks!

Calvin

-----Original Message-----
From: Bryce Harrington [mailto:bryce@bryceharrington.org]
Sent: Thursday, January 17, 2008 1:34 PM
To: Bastian, Waldo
Cc: Amit Kucheria; ubuntu-mobile@lists.ubuntu.com; Zhao, Chunfeng
Subject: Re: Fix for -psb X issue

See amit's comment: http://bryceharrington.org/drupal/node/31

On Thu, Jan 17, 2008 at 01:29:06PM -0800, Bastian, Waldo wrote:
> Can you see where (e.g. with a calltrace) the first lock happens and
> where the second lock happens?
>
> Cheers,
> Waldo
>
> Intel Corporation - Platform Software Engineering, UMG - Hillsboro,
> Oregon
>
> -----Original Message-----
> From: ubuntu-mobile-bounces@lists.ubuntu.com
> [mailto:ubuntu-mobile-bounces@lists.ubuntu.com] On Behalf Of Bryce
> Harrington
> Sent: Thursday, January 17, 2008 12:53 PM
> To: Amit Kucheria
> Cc: ubuntu-mobile@lists.ubuntu.com
> Subject: Fix for -psb X issue
>
> I've uploaded a fix for the -psb X issue to PPA. [1]
>
> Yesterday, Amit and I found that a psbDRILock() routine was being
called
> twice; this routine requests a lock in the kernel, which works the
first
> time, but not the second.
>
> So this morning, I disabled the second lock/unlock in -psb[2], and
sure
> enough, X came up and seems to be working as expected now[3].
>
> Bryce
>
> 1: https://launchpad.net/~ubuntu-mobile/+archive
> 2: http://people.ubuntu.com/~bryce/UME/103_psb_debugs.patch
> 3: http://bryceharrington.org/drupal/ume-psb-fix
>
> --
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> Ubuntu-mobile@lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile

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According feedback from TG, it is not a bug for xserver 1.3, it might be
compatibility issue for 1.4, currently they are not supporting 1.4 and
they are not going to integrate patch into their source code.

Calvin

-----Original Message-----
From: Bryce Harrington [mailto:bryce@bryceharrington.org]
Sent: Thursday, January 17, 2008 1:34 PM
To: Bastian, Waldo
Cc: Amit Kucheria; ubuntu-mobile@lists.ubuntu.com; Zhao, Chunfeng
Subject: Re: Fix for -psb X issue

See amit's comment: http://bryceharrington.org/drupal/node/31

On Thu, Jan 17, 2008 at 01:29:06PM -0800, Bastian, Waldo wrote:
> Can you see where (e.g. with a calltrace) the first lock happens and
> where the second lock happens?
>
> Cheers,
> Waldo
>
> Intel Corporation - Platform Software Engineering, UMG - Hillsboro,
> Oregon
>
> -----Original Message-----
> From: ubuntu-mobile-bounces@lists.ubuntu.com
> [mailto:ubuntu-mobile-bounces@lists.ubuntu.com] On Behalf Of Bryce
> Harrington
> Sent: Thursday, January 17, 2008 12:53 PM
> To: Amit Kucheria
> Cc: ubuntu-mobile@lists.ubuntu.com
> Subject: Fix for -psb X issue
>
> I've uploaded a fix for the -psb X issue to PPA. [1]
>
> Yesterday, Amit and I found that a psbDRILock() routine was being
called
> twice; this routine requests a lock in the kernel, which works the
first
> time, but not the second.
>
> So this morning, I disabled the second lock/unlock in -psb[2], and
sure
> enough, X came up and seems to be working as expected now[3].
>
> Bryce
>
> 1: https://launchpad.net/~ubuntu-mobile/+archive
> 2: http://people.ubuntu.com/~bryce/UME/103_psb_debugs.patch
> 3: http://bryceharrington.org/drupal/ume-psb-fix
>
> --
> Ubuntu-mobile mailing list
> Ubuntu-mobile@lists.ubuntu.com
> Modify settings or unsubscribe at:
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile

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Odd, I would have thought that since they have added requirements for
xserver 1.4 features (EXA 2.2), that the code would have been tested
against and supported on xserver 1.4 as well.

But thanks, this seems to explain the origin of the problem.

Bryce

On Thu, Jan 17, 2008 at 03:13:20PM -0800, Zhao, Chunfeng wrote:
> According feedback from TG, it is not a bug for xserver 1.3, it might be
> compatibility issue for 1.4, currently they are not supporting 1.4 and
> they are not going to integrate patch into their source code.
>
> Calvin
>
> -----Original Message-----
> From: Bryce Harrington [mailto:bryce@bryceharrington.org]
> Sent: Thursday, January 17, 2008 1:34 PM
> To: Bastian, Waldo
> Cc: Amit Kucheria; ubuntu-mobile@lists.ubuntu.com; Zhao, Chunfeng
> Subject: Re: Fix for -psb X issue
>
> See amit's comment: http://bryceharrington.org/drupal/node/31
>
> On Thu, Jan 17, 2008 at 01:29:06PM -0800, Bastian, Waldo wrote:
> > Can you see where (e.g. with a calltrace) the first lock happens and
> > where the second lock happens?
> >
> > Cheers,
> > Waldo
> >
> > Intel Corporation - Platform Software Engineering, UMG - Hillsboro,
> > Oregon
> >
> > -----Original Message-----
> > From: ubuntu-mobile-bounces@lists.ubuntu.com
> > [mailto:ubuntu-mobile-bounces@lists.ubuntu.com] On Behalf Of Bryce
> > Harrington
> > Sent: Thursday, January 17, 2008 12:53 PM
> > To: Amit Kucheria
> > Cc: ubuntu-mobile@lists.ubuntu.com
> > Subject: Fix for -psb X issue
> >
> > I've uploaded a fix for the -psb X issue to PPA. [1]
> >
> > Yesterday, Amit and I found that a psbDRILock() routine was being
> called
> > twice; this routine requests a lock in the kernel, which works the
> first
> > time, but not the second.
> >
> > So this morning, I disabled the second lock/unlock in -psb[2], and
> sure
> > enough, X came up and seems to be working as expected now[3].
> >
> > Bryce
> >
> > 1: https://launchpad.net/~ubuntu-mobile/+archive
> > 2: http://people.ubuntu.com/~bryce/UME/103_psb_debugs.patch
> > 3: http://bryceharrington.org/drupal/ume-psb-fix
> >
> > --
> > Ubuntu-mobile mailing list
> > Ubuntu-mobile@lists.ubuntu.com
> > Modify settings or unsubscribe at:
> > https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile

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