Debugging suspend on Toshiba R830-10p: Some test results and logs

When testing suspend to RAM, all tests went well. But the real thing doesn't work... Ideas?

# echo freezer > /sys/power/pm_test
# echo mem > /sys/power/state
[27354.755748] PM: Syncing filesystems ... done.
[27354.780184] PM: Preparing system for mem sleep
[27354.780687] Freezing user space processes ... (elapsed 0.007 seconds) done.
[27354.787975] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[27354.789133] suspend debug: Waiting for 5 seconds.
[27359.783027] PM: Finishing wakeup.
[27359.783028] Restarting tasks ... done.
[27359.784320] video LNXVIDEO:01: Restoring backlight state

# echo devices > /sys/power/pm_test

# echo mem > /sys/power/state 

[27476.796841] PM: Syncing filesystems ... done.

[27476.820641] PM: Preparing system for mem sleep

[27476.820952] Freezing user space processes ... (elapsed 0.001 seconds) done.

[27476.822083] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.

[27476.823290] PM: Entering mem sleep

[27476.823403] Suspending console(s) (use no_console_suspend to debug)

[27476.824398] sd 0:0:0:0: [sda] Synchronizing SCSI cache

[27476.826199] sd 0:0:0:0: [sda] Stopping disk

[27476.949881] mei_me 0000:00:16.0: suspend

[27477.060221] i915 0000:00:02.0: power state changed by ACPI to D3cold

[27477.123519] PM: suspend of devices complete after 300.336 msecs

[27477.123520] suspend debug: Waiting for 5 seconds.

[27482.117473] i915 0000:00:02.0: power state changed by ACPI to D0

[27482.117503] e1000e 0000:00:19.0: setting latency timer to 64

[27482.117517] mei_me 0000:00:16.0: irq 55 for MSI/MSI-X

[27482.117522] e1000e 0000:00:19.0: irq 56 for MSI/MSI-X

[27482.121797] ehci-pci 0000:00:1a.0: setting latency timer to 64

[27482.121974] ehci-pci 0000:00:1d.0: setting latency timer to 64

[27482.121984] toshiba_bluetooth: Re-enabling Toshiba Bluetooth

[27482.127556] i915 0000:00:02.0: setting latency timer to 64

[27482.128809] ahci 0000:00:1f.2: setting latency timer to 64

[27482.133671] snd_hda_intel 0000:00:1b.0: irq 57 for MSI/MSI-X

[27482.145762] [drm] Wrong MCH_SSKPD value: 0x16040307

[27482.145763] [drm] This can cause pipe underruns and display issues.

[27482.145763] [drm] Please upgrade your BIOS to fix this.

[27482.444173] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

[27482.446135] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[27482.446461] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27482.446471] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27482.446525] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27482.446532] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27482.446912] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27482.446918] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27482.446955] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27482.446960] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27482.446999] ata1.00: configured for UDMA/100

[27482.447050] sd 0:0:0:0: [sda] Starting disk

[27482.448130] ata4: SATA link down (SStatus 0 SControl 300)

[27482.449304] ata3.00: configured for UDMA/100

[27482.634261] PM: resume of devices complete after 517.541 msecs

[27482.634521] PM: Finishing wakeup.

[27482.634523] Restarting tasks ... done.

[27482.635801] video LNXVIDEO:01: Restoring backlight state

[27483.509825] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off

[27483.881322] e1000e: enp0s25 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None

[27483.881332] e1000e 0000:00:19.0 enp0s25: 10/100 speed: disabling TSO

# echo platform > /sys/power/pm_test

# echo mem > /sys/power/state 

[27721.020621] PM: Syncing filesystems ... done.

[27721.043989] PM: Preparing system for mem sleep

[27721.044287] Freezing user space processes ... (elapsed 0.001 seconds) done.

[27721.045418] Freezing remaining freezable tasks ... (elapsed 0.000 seconds) done.

[27721.046353] PM: Entering mem sleep

[27721.046436] Suspending console(s) (use no_console_suspend to debug)

[27721.047172] sd 0:0:0:0: [sda] Synchronizing SCSI cache

[27721.047261] sd 0:0:0:0: [sda] Stopping disk

[27721.166793] mei_me 0000:00:16.0: suspend

[27721.293987] i915 0000:00:02.0: power state changed by ACPI to D3cold

[27721.341260] PM: suspend of devices complete after 295.104 msecs

[27721.341494] PM: late suspend of devices complete after 0.231 msecs

[27721.373902] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI

[27721.385162] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI

[27721.395828] e1000e 0000:00:19.0: System wakeup enabled by ACPI

[27721.417761] PM: noirq suspend of devices complete after 76.364 msecs

[27721.418005] ACPI: Preparing to enter system sleep state S3

[27721.418275] PM: Saving platform NVS memory

[27721.418953] suspend debug: Waiting for 5 seconds.

[27726.413177] ACPI: Waking up from system sleep state S3

[27726.413576] i915 0000:00:02.0: power state changed by ACPI to D0

[27726.468195] ehci-pci 0000:00:1a.0: System wakeup disabled by ACPI

[27726.490167] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI

[27726.512267] sdhci-pci 0000:01:00.0: MMC controller base frequency changed to 50Mhz.

[27726.545198] PM: noirq resume of devices complete after 131.829 msecs

[27726.545317] PM: early resume of devices complete after 0.076 msecs

[27726.545346] i915 0000:00:02.0: setting latency timer to 64

[27726.545364] mei_me 0000:00:16.0: irq 55 for MSI/MSI-X

[27726.545371] e1000e 0000:00:19.0: System wakeup disabled by ACPI

[27726.545380] e1000e 0000:00:19.0: setting latency timer to 64

[27726.545401] e1000e 0000:00:19.0: irq 56 for MSI/MSI-X

[27726.545534] ahci 0000:00:1f.2: setting latency timer to 64

[27726.545924] ehci-pci 0000:00:1a.0: setting latency timer to 64

[27726.546096] snd_hda_intel 0000:00:1b.0: irq 57 for MSI/MSI-X

[27726.546294] ehci-pci 0000:00:1d.0: setting latency timer to 64

[27726.550352] toshiba_bluetooth: Re-enabling Toshiba Bluetooth

[27726.568320] [drm] Wrong MCH_SSKPD value: 0x16040307

[27726.568321] [drm] This can cause pipe underruns and display issues.

[27726.568321] [drm] Please upgrade your BIOS to fix this.

[27726.866676] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[27726.867036] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27726.867047] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27726.867096] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27726.867104] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27726.867463] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27726.867471] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27726.867516] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27726.867524] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27726.867564] ata1.00: configured for UDMA/100

[27726.867622] sd 0:0:0:0: [sda] Starting disk

[27726.868654] ata4: SATA link down (SStatus 0 SControl 300)

[27726.870659] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

[27726.875856] ata3.00: configured for UDMA/100

[27727.046699] PM: resume of devices complete after 502.030 msecs

[27727.046971] PM: Finishing wakeup.

[27727.046973] Restarting tasks ... done.

[27727.048108] video LNXVIDEO:01: Restoring backlight state

[27728.195009] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off

[27728.355744] e1000e: enp0s25 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None

[27728.355752] e1000e 0000:00:19.0 enp0s25: 10/100 speed: disabling TSO

# echo processors > /sys/power/pm_test

# echo mem > /sys/power/state 

[27808.566665] PM: Syncing filesystems ... done.

[27808.590955] PM: Preparing system for mem sleep

[27808.591499] Freezing user space processes ... (elapsed 0.001 seconds) done.

[27808.592616] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.

[27808.593723] PM: Entering mem sleep

[27808.593828] Suspending console(s) (use no_console_suspend to debug)

[27808.594707] sd 0:0:0:0: [sda] Synchronizing SCSI cache

[27808.594775] sd 0:0:0:0: [sda] Stopping disk

[27808.715371] mei_me 0000:00:16.0: suspend

[27808.823963] i915 0000:00:02.0: power state changed by ACPI to D3cold

[27808.889284] PM: suspend of devices complete after 295.679 msecs

[27808.889467] PM: late suspend of devices complete after 0.181 msecs

[27808.921825] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI

[27808.933096] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI

[27808.943763] e1000e 0000:00:19.0: System wakeup enabled by ACPI

[27808.965705] PM: noirq suspend of devices complete after 76.335 msecs

[27808.965999] ACPI: Preparing to enter system sleep state S3

[27808.966272] PM: Saving platform NVS memory

[27808.967073] Disabling non-boot CPUs ...

[27808.967359] Broke affinity for irq 54

[27808.968711] smpboot: CPU 1 is now offline

[27808.970200] smpboot: CPU 2 is now offline

[27808.970687] Broke affinity for irq 16

[27808.970690] Broke affinity for irq 23

[27808.970693] Broke affinity for irq 42

[27808.970695] Broke affinity for irq 43

[27808.970696] Broke affinity for irq 44

[27808.970698] Broke affinity for irq 45

[27808.970700] Broke affinity for irq 46

[27808.970702] Broke affinity for irq 47

[27808.970703] Broke affinity for irq 48

[27808.970705] Broke affinity for irq 49

[27808.970707] Broke affinity for irq 50

[27808.970708] Broke affinity for irq 51

[27808.970710] Broke affinity for irq 52

[27808.971730] smpboot: CPU 3 is now offline

[27808.972038] suspend debug: Waiting for 5 seconds.

[27813.965863] Enabling non-boot CPUs ...

[27813.965885] smpboot: Booting Node 0 Processor 1 APIC 0x1

[27813.966148] [sched_delayed] sched: RT throttling activated

[27813.979154] Intel pstate controlling: cpu 1

[27813.979217] microcode: CPU1 sig=0x206a7, pf=0x10, revision=0x29

[27813.979220] CPU1 is up

[27813.979236] smpboot: Booting Node 0 Processor 2 APIC 0x2

[27813.992495] Intel pstate controlling: cpu 2

[27813.992558] microcode: CPU2 sig=0x206a7, pf=0x10, revision=0x29

[27813.992561] CPU2 is up

[27813.992576] smpboot: Booting Node 0 Processor 3 APIC 0x3

[27814.005844] Intel pstate controlling: cpu 3

[27814.005890] microcode: CPU3 sig=0x206a7, pf=0x10, revision=0x29

[27814.005893] CPU3 is up

[27814.008977] ACPI: Waking up from system sleep state S3

[27814.009621] i915 0000:00:02.0: power state changed by ACPI to D0

[27814.064059] ehci-pci 0000:00:1a.0: System wakeup disabled by ACPI

[27814.086029] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI

[27814.108153] sdhci-pci 0000:01:00.0: MMC controller base frequency changed to 50Mhz.

[27814.141065] PM: noirq resume of devices complete after 131.682 msecs

[27814.141188] PM: early resume of devices complete after 0.077 msecs

[27814.141203] i915 0000:00:02.0: setting latency timer to 64

[27814.141237] mei_me 0000:00:16.0: irq 55 for MSI/MSI-X

[27814.141257] e1000e 0000:00:19.0: System wakeup disabled by ACPI

[27814.141265] e1000e 0000:00:19.0: setting latency timer to 64

[27814.141285] e1000e 0000:00:19.0: irq 56 for MSI/MSI-X

[27814.142181] ahci 0000:00:1f.2: setting latency timer to 64

[27814.152469] ehci-pci 0000:00:1a.0: setting latency timer to 64

[27814.152545] snd_hda_intel 0000:00:1b.0: irq 57 for MSI/MSI-X

[27814.152695] ehci-pci 0000:00:1d.0: setting latency timer to 64

[27814.152704] toshiba_bluetooth: Re-enabling Toshiba Bluetooth

[27814.166059] [drm] Wrong MCH_SSKPD value: 0x16040307

[27814.166059] [drm] This can cause pipe underruns and display issues.

[27814.166060] [drm] Please upgrade your BIOS to fix this.

[27814.466522] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

[27814.468514] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[27814.468696] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27814.468700] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27814.468718] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27814.468722] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27814.468954] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27814.468958] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27814.468976] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27814.468979] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27814.469006] ata1.00: configured for UDMA/100

[27814.469037] sd 0:0:0:0: [sda] Starting disk

[27814.471662] ata3.00: configured for UDMA/100

[27814.472504] ata4: SATA link down (SStatus 0 SControl 300)

[27814.652459] PM: resume of devices complete after 511.934 msecs

[27814.652616] PM: Finishing wakeup.

[27814.652617] Restarting tasks ... done.

[27814.653218] video LNXVIDEO:01: Restoring backlight state

[27815.939622] e1000e: enp0s25 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None

[27815.939632] e1000e 0000:00:19.0 enp0s25: 10/100 speed: disabling TSO

[27816.080477] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off

# echo core > /sys/power/pm_test

# echo mem > /sys/power/state 

[27978.819058] PM: Syncing filesystems ... done.

[27978.847076] PM: Preparing system for mem sleep

[27978.847699] Freezing user space processes ... (elapsed 0.006 seconds) done.

[27978.854415] Freezing remaining freezable tasks ... (elapsed 0.000 seconds) done.

[27978.855398] PM: Entering mem sleep

[27978.855500] Suspending console(s) (use no_console_suspend to debug)

[27978.856388] sd 0:0:0:0: [sda] Synchronizing SCSI cache

[27978.856480] sd 0:0:0:0: [sda] Stopping disk

[27978.976177] mei_me 0000:00:16.0: suspend

[27979.079138] i915 0000:00:02.0: power state changed by ACPI to D3cold

[27979.149989] PM: suspend of devices complete after 294.725 msecs

[27979.150318] PM: late suspend of devices complete after 0.325 msecs

[27979.182982] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI

[27979.194246] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI

[27979.204909] e1000e 0000:00:19.0: System wakeup enabled by ACPI

[27979.226842] PM: noirq suspend of devices complete after 76.622 msecs

[27979.227095] ACPI: Preparing to enter system sleep state S3

[27979.227344] PM: Saving platform NVS memory

[27979.228057] Disabling non-boot CPUs ...

[27979.228319] Broke affinity for irq 54

[27979.229609] smpboot: CPU 1 is now offline

[27979.231147] smpboot: CPU 2 is now offline

[27979.231783] Broke affinity for irq 16

[27979.231785] Broke affinity for irq 23

[27979.231788] Broke affinity for irq 42

[27979.231789] Broke affinity for irq 43

[27979.231791] Broke affinity for irq 44

[27979.231793] Broke affinity for irq 45

[27979.231794] Broke affinity for irq 46

[27979.231796] Broke affinity for irq 47

[27979.231798] Broke affinity for irq 48

[27979.231799] Broke affinity for irq 49

[27979.231801] Broke affinity for irq 50

[27979.231802] Broke affinity for irq 51

[27979.231804] Broke affinity for irq 52

[27979.232828] smpboot: CPU 3 is now offline

[27979.233279] suspend debug: Waiting for 5 seconds.

[27984.227385] microcode: CPU0 sig=0x206a7, pf=0x10, revision=0x29

[27984.227418] Enabling non-boot CPUs ...

[27984.227450] smpboot: Booting Node 0 Processor 1 APIC 0x1

[27984.240724] Intel pstate controlling: cpu 1

[27984.240789] microcode: CPU1 sig=0x206a7, pf=0x10, revision=0x29

[27984.240793] CPU1 is up

[27984.240808] smpboot: Booting Node 0 Processor 2 APIC 0x2

[27984.254085] Intel pstate controlling: cpu 2

[27984.254146] microcode: CPU2 sig=0x206a7, pf=0x10, revision=0x29

[27984.254150] CPU2 is up

[27984.254164] smpboot: Booting Node 0 Processor 3 APIC 0x3

[27984.267446] Intel pstate controlling: cpu 3

[27984.267506] microcode: CPU3 sig=0x206a7, pf=0x10, revision=0x29

[27984.267510] CPU3 is up

[27984.270772] ACPI: Waking up from system sleep state S3

[27984.271203] i915 0000:00:02.0: power state changed by ACPI to D0

[27984.325879] ehci-pci 0000:00:1a.0: System wakeup disabled by ACPI

[27984.347850] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI

[27984.369927] sdhci-pci 0000:01:00.0: MMC controller base frequency changed to 50Mhz.

[27984.402884] PM: noirq resume of devices complete after 131.893 msecs

[27984.403005] PM: early resume of devices complete after 0.078 msecs

[27984.403030] i915 0000:00:02.0: setting latency timer to 64

[27984.403059] mei_me 0000:00:16.0: irq 55 for MSI/MSI-X

[27984.403060] e1000e 0000:00:19.0: System wakeup disabled by ACPI

[27984.403069] e1000e 0000:00:19.0: setting latency timer to 64

[27984.403093] e1000e 0000:00:19.0: irq 56 for MSI/MSI-X

[27984.403258] ahci 0000:00:1f.2: setting latency timer to 64

[27984.403614] ehci-pci 0000:00:1a.0: setting latency timer to 64

[27984.403816] snd_hda_intel 0000:00:1b.0: irq 57 for MSI/MSI-X

[27984.403988] ehci-pci 0000:00:1d.0: setting latency timer to 64

[27984.408183] toshiba_bluetooth: Re-enabling Toshiba Bluetooth

[27984.425895] [drm] Wrong MCH_SSKPD value: 0x16040307

[27984.425895] [drm] This can cause pipe underruns and display issues.

[27984.425895] [drm] Please upgrade your BIOS to fix this.

[27984.722410] ata4: SATA link down (SStatus 0 SControl 300)

[27984.724371] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

[27984.724764] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27984.724777] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27984.724836] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27984.724864] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27984.725245] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27984.725255] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._SDD] (Node ffff880437c91cd0), AE_NOT_FOUND (20130517/psparse-536)

[27984.725309] ACPI Error: [GTF0] Namespace lookup failure, AE_NOT_FOUND (20130517/psargs-359)

[27984.725318] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SAT0.PRT0._GTF] (Node ffff880437c91cf8), AE_NOT_FOUND (20130517/psparse-536)

[27984.725386] ata1.00: configured for UDMA/100

[27984.725474] sd 0:0:0:0: [sda] Starting disk

[27984.726351] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

[27984.731495] ata3.00: configured for UDMA/100

[27984.904359] PM: resume of devices complete after 502.002 msecs

[27984.904677] PM: Finishing wakeup.

[27984.904679] Restarting tasks ... done.

[27984.906546] video LNXVIDEO:01: Restoring backlight state

[27985.851959] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off

[27986.207485] e1000e: enp0s25 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None

[27986.207493] e1000e 0000:00:19.0 enp0s25: 10/100 speed: disabling TSO