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Mr. Anderson
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PostPosted: Wed Apr 04, 2007 1:50 pm    Post subject: [solved]PM-Timer Bug Reply with quote

Eben bin ich die Ausgabe von dmesg durchgegangen und habe dabei das hier gefunden:

Quote:
* The chipset may have PM-Timer Bug. Due to workarounds for a bug,
* this clock source is slow. If you are sure your timer does not have
* this bug, please use "acpi_pm_good" to disable the workaround


Was ist der/ein "PM-Timer Bug"? Was ist damit gemeint, dass die "clock source" langsam ist? Wie finde ich heraus, ob mein Chipsatz den Fehler hat?


Last edited by Mr. Anderson on Sat Apr 07, 2007 10:12 pm; edited 1 time in total
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think4urs11
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PostPosted: Wed Apr 04, 2007 3:49 pm    Post subject: Reply with quote

was haben nur alle gegen google? :roll:

erster Treffer: http://marc.info/?l=linux-kernel&m=114297656924494&w=2
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Mr. Anderson
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PostPosted: Wed Apr 04, 2007 3:54 pm    Post subject: Reply with quote

Think4UrS11 wrote:
was haben nur alle gegen google? :roll:

erster Treffer: http://marc.info/?l=linux-kernel&m=114297656924494&w=2


Seh ich aus wie ein Kernel-Hacker?
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think4urs11
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PostPosted: Wed Apr 04, 2007 4:13 pm    Post subject: Reply with quote

Mr. Anderson wrote:
Seh ich aus wie ein Kernel-Hacker?

Schwer zu sagen ohne ein aussagekräftiges Foto ;)

Der Kommentar im Source scheint mir aber relativ eindeutig
Quote:
It has been reported that because of various broken chipsets (ICH4, PIIX4 and PIIX4E) where the ACPI PM time source is not latched, so you must read it multiple times to insure a safe value is read.

oder anders gesagt wenn du diese Meldung beim Booten bekommst dann hast du sehr wahrscheinlich auch dieses Problem. Um ganz sicher zu sein compile dir mal das Proggie aus dem Link und lass es laufen, dann wird aus dem 'may have ...' entweder ein 'has ...' oder eben nicht.
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Mr. Anderson
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PostPosted: Wed Apr 04, 2007 5:04 pm    Post subject: Reply with quote

Sieht gut aus. Also eher nicht nach Fehler:

Code:
dmesg | grep PM
ACPI: PM-Timer IO Port: 0xe408
* The chipset may have PM-Timer Bug. Due to workarounds for a bug,
su
Passwort:
./a.out 0xe408
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
1000000
1100000
1200000
1300000
1400000
1500000
1600000
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2000000
2100000
2200000
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3000000
3100000
3200000
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3400000
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3600000
3700000
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4000000
4100000
4200000
4300000
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4900000
5000000
5100000
5200000
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5500000
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6000000
6100000
6200000
6300000
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6800000
6900000
7000000
7100000
7200000
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7900000
8000000
8100000
8200000
8300000
8400000
8500000
8600000
8700000
8800000
8900000
9000000
9100000
9200000
9300000
9400000
9500000
9600000
9700000
9800000
9900000


Nun steht da, man soll "acpi_pm_good" benutzen, um den Workaround zu deaktivieren. Ist acpi_pm_good ein Kernel-Parameter? Oder muss ich da was beim Kompilieren einstellen?
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Mr. Anderson
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PostPosted: Sat Apr 07, 2007 9:10 pm    Post subject: Reply with quote

ganz vergessen:
acpi_pm_good ist ein Kernel-Parameter. Funktioniert alles einwandfrei. Ich weiß zwar immer noch nicht, was mir das gebracht hat, aber zumindest habe ich in dmesg nach dem Booten nun keinen Fehler und keine Warnung mehr stehen. :)
Vielen Dank für die Hilfe, Think4UrS11.
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