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#1 2013-01-14 15:16:17

mariuspot
Member
Registered: 2012-12-19
Posts: 2

Laptop freezes when I connect power.

Hi,

When I connect my laptop to external power it freezes. It work fine when I boot up with external power connected, but as soon as I disconnect and reconnects it freezes.

log output

When I disconnect the power

forcedeth 0000:00:0a.0 eth0: link down
EXT4-fs (sda7): re-mounted. Opts: data=ordered,commit=600
EXT4-fs (sda5): re-mounted. Opts: (null)

When I reconnect the power I get

forcedeth 0000:00:0a.0 eth0: link down
ata1.00: exception Emask 0x10 SAct 0x0 SErr 0x1990000 action 0xe frozen
ata1.00: irq_stat 0x00400000, PHY RDY changed
ata1: SError: { PHYRdyChg 10B8B Dispar LinkSeq TrStaTrns }
ata1.00: failed command: IDENTIFY DEVICE
ata1.00: cmd ec/00"01:00:00:00/00:00:00:00:00/40 tag 0 pio 512 in
         res 50/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x10 (ATA bus error)
ata1.00: status: { DRDY }

and sometimes

WARNING: at kernel/watchdog.c:245 watchdog_overflow_callback+0x9c/0xd0()
Hardware name: MacBookPro5,2
Watchdog detected hard LOCKUP on cpu 0
WARNING: at kernel/watchdog.c:245 watchdog_overflow_callback+0x9c/0xd0()
Hardware name: MacBookPro5,2
Watchdog detected hard LOCKUP on cpu 1

Anyone know how to fix this or how to investigate it further?

Thanks,
M

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#2 2013-01-16 06:08:40

haidut
Member
Registered: 2012-03-13
Posts: 16

Re: Laptop freezes when I connect power.

Not sure how much this will help but from the log it looks like when you remove the power source your SSD gets remounted. I'm guessing that when you plug back in, the same operation fails. Here's a similar sounding issue:

http://askubuntu.com/questions/16608/ho … p-in-dmesg

Perhaps look at your ACPI handler and see if you can change the behaviour during unplugging? Don't really know what else to look at.

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