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SubjectRe: [3/3] 2.6.21-rc7: known regressions (v2)
On Mon, 23 Apr 2007 23:49:09 +0200 Adrian Bunk <bunk@stusta.de> wrote:

> This email lists some known regressions in Linus' tree compared to 2.6.20.
>
> If you find your name in the Cc header, you are either submitter of one
> of the bugs, maintainer of an affectected subsystem or driver, a patch
> of you caused a breakage or I'm considering you in any other way
> possibly involved with one or more of these issues.
>
> Due to the huge amount of recipients, please trim the Cc when answering.
>
>
> Subject : HPET enabled freeze my machine at boot
> workaround: clocksource=acpi_pm
> References : http://lkml.org/lkml/2007/4/19/370
> Submitter : Guilherme Schroeder <guilherme@centralinf.com.br>
> Caused-By : Thomas Gleixner <tglx@linutronix.de>
> commit 5d8b34fdcb384161552d01ee8f34af5ff11f9684
> Handled-By : John Stultz <johnstul@us.ibm.com>
> Status : problem is being debugged
>
>
> Subject : acpi_pm clocksource loses time on x86-64
> References : http://lkml.org/lkml/2007/4/17/143
> Submitter : Mikael Pettersson <mikpe@it.uu.se>
> Handled-By : John Stultz <johnstul@us.ibm.com>
> Status : problem is being debugged
>
>
> Subject : suspend to disk hangs (CONFIG_NO_HZ)
> References : http://lkml.org/lkml/2007/3/25/217
> Submitter : Jeff Chua <jeff.chua.linux@gmail.com>
> Status : unknown

That's still rather a lot of bustage from the timekeeping changes. Is
anything really happening here or have we all given up?

>
> Subject : ThinkPad X60: resume no longer works (PCI related?)
> workaround: CONFIG_FB_BACKLIGHT=n
> References : http://lkml.org/lkml/2007/3/13/3
> Submitter : Dave Jones <davej@redhat.com>
> Caused-By : PCI merge
> commit 78149df6d565c36675463352d0bfe0000b02b7a7
> Handled-By : Eric W. Biederman <ebiederm@xmission.com>
> Rafael J. Wysocki <rjw@sisk.pl>
> Antonino A. Daplas <adaplas@gmail.com>
> Status : unknown
>

Is this related to the problems Jeremy has been looking at?

> Subject : suspend to disk works only once
> workaround: "echo shutdown > /sys/power/disk"
> References : http://lkml.org/lkml/2007/4/13/240
> Submitter : Tobias Diedrich <ranma+kernel@tdiedrich.de>
> Caused-By : Rafael J. Wysocki <rjw@sisk.pl>
> commit ed746e3b18f4df18afa3763155972c5835f284c5
> Handled-By : Rafael J. Wysocki <rjw@sisk.pl>
> Dmitry Torokhov <dtor@insightbb.com>
> Status : problem is being debugged

That's been happening on my Vaio-of-death for several weeks now. I spent a
bit of time with the ACPI guys on it but we didn't get far. I need to
find an hour or two to work out what's gone wrong.
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