I have had a long ongoing ordeal dealing with the problems associated
with the HP Pavilion Laptops, mine being a dv9000 series. It seems
that these either have a broken HPET table, a missing HPET table, or
some other ACPI issue, as this thing has always had many issues
regarding ACPI. First, C1E was broken until I totally disabled it with
a patch, but since .27, that code has been rewritten, and now for some
reason HPET isn't working anymore, as I have to set the
clocksource=tsc. On top of that, the tsc clocksource is unstable, and
with or without dynticks the .27 kernels on my laptop feel slower, and
laggy, as even KDE slows down whilest using it. Everything works fine
if I disable the local apic (lapic), but when I do, only one of my CPU
cores is detected and used, and the CPU frequency scaling doesn't work
either. No matter what I do with .27, it just won't work.
I've tried with the linux next kernel as suggested by Eduard Munteanu,
to no avail with the same problem. He said this:
"This is not the right fix. Instead, HPET should be used as a timer
source for dynticks. This is not in 2.6.26, but I tried the linux-next
tree (google it) and it looked like dynticks worked fine, without
disabling C1E. Can't place my finger on the exact commit, but you could
check."
Apparently, it's either this or something closely related that is
causing such calamity for users of these HP/Compaq laptops as myself.
I say this not just for me, as there are many thousands who have
issues with these laptops and their crappy bios implementations. Most
are n00bs using Ubuntu, who can't even voice what's wrong, as they are
new to linux anyway.
That said, here are system specifics regarding the motherboard and make.
HP Pavilion dv9205us
Motherboard: Quanta 30B7
Processor: AMD Turion 64 x2 3.2ghz, TL-50
Bios: Phoenix (this is known to be buggy, but until now I had no
problems since 2.6.24. Compiled on Windows, this bios is.)
Other than that, I have no pertinent information, at least until
someone asks something specific. I wouldn't be contacting you all if I
wasn't at the end of my own resources, as I am part of the Zen kernel
community, and they can usually help out with these sorts of things.
(zen-sources.org).
Anyway, I appreciate any help/response I can get out of this.
Thanks!
Matt Parnell
[Adding CCs]
On Thursday, 7 of August 2008, Matt Parnell wrote:
> I have had a long ongoing ordeal dealing with the problems associated
> with the HP Pavilion Laptops, mine being a dv9000 series. It seems
> that these either have a broken HPET table, a missing HPET table, or
> some other ACPI issue, as this thing has always had many issues
> regarding ACPI. First, C1E was broken until I totally disabled it with
> a patch, but since .27, that code has been rewritten, and now for some
> reason HPET isn't working anymore, as I have to set the
> clocksource=tsc. On top of that, the tsc clocksource is unstable, and
> with or without dynticks the .27 kernels on my laptop feel slower, and
> laggy, as even KDE slows down whilest using it. Everything works fine
> if I disable the local apic (lapic), but when I do, only one of my CPU
> cores is detected and used, and the CPU frequency scaling doesn't work
> either. No matter what I do with .27, it just won't work.
>
> I've tried with the linux next kernel as suggested by Eduard Munteanu,
> to no avail with the same problem. He said this:
>
> "This is not the right fix. Instead, HPET should be used as a timer
> source for dynticks. This is not in 2.6.26, but I tried the linux-next
> tree (google it) and it looked like dynticks worked fine, without
> disabling C1E. Can't place my finger on the exact commit, but you could
> check."
>
> Apparently, it's either this or something closely related that is
> causing such calamity for users of these HP/Compaq laptops as myself.
> I say this not just for me, as there are many thousands who have
> issues with these laptops and their crappy bios implementations. Most
> are n00bs using Ubuntu, who can't even voice what's wrong, as they are
> new to linux anyway.
>
> That said, here are system specifics regarding the motherboard and make.
>
> HP Pavilion dv9205us
> Motherboard: Quanta 30B7
> Processor: AMD Turion 64 x2 3.2ghz, TL-50
> Bios: Phoenix (this is known to be buggy, but until now I had no
> problems since 2.6.24. Compiled on Windows, this bios is.)
>
> Other than that, I have no pertinent information, at least until
> someone asks something specific. I wouldn't be contacting you all if I
> wasn't at the end of my own resources, as I am part of the Zen kernel
> community, and they can usually help out with these sorts of things.
> (zen-sources.org).
>
> Anyway, I appreciate any help/response I can get out of this.
>
> Thanks!
> Matt Parnell
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>
>
> > "This is not the right fix. Instead, HPET should be used as a timer
> > source for dynticks. This is not in 2.6.26, but I tried the
> > linux-next tree (google it) and it looked like dynticks worked fine,
> > without disabling C1E. Can't place my finger on the exact commit,
> > but you could check."
Would be nice to figure out which exact change solves the problem, so
that we could fast-route it into v2.6.27. (and for eventual .26 and .25
backporting, if it's simple enough)
first thing would be to check whether tip/master works fine:
http://people.redhat.com/mingo/tip.git/README
if that works fine it would be nice to check whether the pending changes
in tip/timers/hpet solves this particular issue. That can be done by:
git-checkout -b tmp.test tip/timers/hpet
[ once you have set up tip as a remote repository, as described in the
README above. ]
If tip/timers/hpet solves the problem then it's one of these five
commits that solves it:
f92a789: hpet: /dev/hpet - fixes and cleanup, fix
64a76f6: hpet: /dev/hpet - fixes and cleanup
f356181: x86: add PCI ID for 6300ESB force hpet
3243b4e: x86: add another PCI ID for ICH6 force-hpet
70ef6d5: x86: get irq for hpet timer
Ingo
Matt,
On Thu, 7 Aug 2008, Matt Parnell wrote:
> That said, here are system specifics regarding the motherboard and make.
>
> HP Pavilion dv9205us
> Motherboard: Quanta 30B7
> Processor: AMD Turion 64 x2 3.2ghz, TL-50
> Bios: Phoenix (this is known to be buggy, but until now I had no
> problems since 2.6.24. Compiled on Windows, this bios is.)
>
> Other than that, I have no pertinent information, at least until
> someone asks something specific. I wouldn't be contacting you all if I
> wasn't at the end of my own resources, as I am part of the Zen kernel
> community, and they can usually help out with these sorts of things.
> (zen-sources.org).
>
> Anyway, I appreciate any help/response I can get out of this.
Can you please try 2.6.27-rc3 or Linus latest git ? Also please
provide a full boot log.
Thanks,
tglx