Investigating failed suspend/resume T61

[Edward Tomasz Napierała]

The difference in dmesg with (-) and without (+) the modem looks like this:

--- dmesg.modem	2014-06-06 09:46:02.000000000 +0200
+++ dmesg.bez	2014-06-06 09:52:45.000000000 +0200
@@ -48,7 +48,7 @@ Event timer "HPET1" frequency 14318180 H
 Event timer "HPET2" frequency 14318180 Hz quality 440
 atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
 Event timer "RTC" frequency 32768 Hz quality 0
-Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
+Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
 acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
 acpi_lid0: <Control Method Lid Switch> on acpi0
 acpi_button0: <Sleep Button> on acpi0
@@ -157,12 +157,13 @@ est0: <Enhanced SpeedStep Frequency Cont
 coretemp1: <CPU On-Die Thermal Sensors> on cpu1
 est1: <Enhanced SpeedStep Frequency Control> on cpu1
 Timecounters tick every 1.000 msec
+hdac0: Command timeout on address 1
+hdac0: Command timeout on address 1
+hdac0: CODEC is not responding!
 hdacc0: <Analog Devices AD1984 HDA CODEC> at cad 0 on hdac0
 hdaa0: <Analog Devices AD1984 Audio Function Group> at nid 1 on hdacc0
 pcm0: <Analog Devices AD1984 (Analog 2.0+HP/2.0)> at nid 18,17 and 28,20,21 on hdaa0
 pcm1: <Analog Devices AD1984 (Ext-Rear Digital)> at nid 27 on hdaa0
-hdacc1: <Conexant (0x2bfa) HDA CODEC> at cad 1 on hdac0
-unknown: <Conexant (0x2bfa) HDA CODEC Modem Function Group> at nid 2 on hdacc1 (no driver attached)
 random: unblocking device.
 usbus0: 12Mbps Full Speed USB v1.0
 usbus1: 12Mbps Full Speed USB v1.0

Note that with modem disabled, it's not suspend that fails - it's the
resuming.

On 0605T2152, Adrian Chadd wrote:
> ok so when you disable the modem, does it still think there's a modem
> there? Is it still trying to power the device off via ACPI even though
> it's not probed?
> 
> 
> -a
> 
> 
> On 5 June 2014 10:50, Sean Bruno <sbruno at ignoranthack.me> wrote:
> > On Wed, 2014-06-04 at 15:32 -0700, Adrian Chadd wrote:
> >> Hi,
> >>
> >> Please also document why it is/isn't working. It's only documented as
> >> "suspend/resume doesn't work" :)
> >>
> >>
> >> -a
> >
> >
> > Well there's this that trasz updated to indicate that it works:
> > https://wiki.freebsd.org/SuspendResume
> >
> > I just updated this to indicate the same information:
> > https://wiki.freebsd.org/Laptops/Thinkpad_T61
> >
> > sean
> >