Bug #3087

Acer TravelMate Spin B hangs in TSC testing synchronization..

Added by mneumann over 3 years ago. Updated over 3 years ago.

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Start date:
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I am running DragonFly 5.0.0-RELEASE on an Acer TravelMate Spin B (Intel N3450 @ 1.10 GHz) laptop.

When booting, it shows:

TSC invariant clock: 1094436275 Hz
lapic: TSC Deadline Mode: shift 0, frequency 1094436275 Hz
srat_probe: can't locate SRAT
Initialize MI interrupts
TSC testing synchronization ...

and then it loops/hangs forever. Any help appreciated.



Updated by swildner over 3 years ago

Please post (or take a photo of) the output with a verbose boot ('v' from the loader menu).

As far as I can tell TSC synchronization gives no more output than just "TSC testing MP synchronization" if it succeeds.


Updated by mneumann over 3 years ago

verbose booting gives (the remaining lines that I can see):

Initialize MI interrupts
MWAIT hints (2 C1 hints):
C1/0 hint 0x0000
C1/1 hint 0x0001
MWAIT deep hints:
C1/0 hint 0x0000
C1/1 hint 0x0001
C3/0 hint 0x0020
C3/1 hint 0x0021
C4/0 hint 0x0030
C4/1 hint 0x0031
C4/2 hint 0x0032
C5/0 hint 0x0040
C5/1 hint 0x0041
C6/0 hint 0x0050
C7/0 hint 0x0060
objcache: magazine cap [6, 134]
Finish MP startup
Active CPU Mask: 000000000000000f
TSC testing MP synchronization ...
cpu0: TSC testing MP synchronization ...


Updated by mneumann over 3 years ago

  • Status changed from New to In Progress

Since commit, it successfully boots when

set hw.tsc_cputimer_force="-1"

is specified in /boot/loader.conf.


Updated by mneumann over 3 years ago

  • Status changed from In Progress to Resolved

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