unresponsive lemu6 . . . NVMe SSD ( samsung SSD 950 PRO )

Thanks for the bug report, sorry to hear you're having issues!

Sounds like you're having multiple (and perhaps unrelated issues), so let's first focus on the keyboard and mouse not working.

If you could please provide a bit more information to help us narrow this down:

(1) You used the word "unresponsive"... is the problem that the keyboard and mouse/trackpad don't work at all, or just that they are very slow to respond? In other words, in the condition you're describing, does it seem like your lemu6 is freezing or just that it gets extremely sluggish?

(2) You said that this condition usually takes several days to manifest... can you provide more details on what you're doing during this time? For example, do you suspend/resume during this time? Are there any particular applications that you tend to have open throughout these two days?

(3) You tagged this with "nvme"... do you have reason to believe this is related to nvme? For example, have you noticed anything in dmesg or other logs that suggest the nvme driver might be to blame?

(4) Any noteworthy changes you've made to your system that might introduce variables we don't have in our internal testing? For example, have you installed any servers or other background services that run continuously? Have you installed any software from PPAs or other 3rd party sources?

At first glance, this sounds more like a software problem (likely a memory leak somewhere) rather than a hardware problem. More information will help us narrow down the cause.

Thanks!

One other thing... in the future if you encounter any issues, please use the System76 support system.

Log into your System76 account, then go to support and created a ticket. You'll tend to get a much quicker response there.

Our engineers do their best to keep tabs on System76 related bugs on Launchpad, but it all depends on how busy we are with other things. In contrast, our support team will always be able to give you the time and attention you deserve :D

sometime the CPU responsive gets slower... then some thing stop working on next startup

it get worse when i am not plugin to AC power . . .
. . . when it is run on its Battery then it sometime becomes even more unresponsive

i was on Battery power ....i had all CPUs at 10 to 20% and RAM at 1.5GB with firefox then i closed all of it...it when about CPU at 0 to 5% and RAM at 700MB ...when i logged off that is when the mouse stopped working

10% to 20% per cpu and 1.5GB of Ram and on Battery = mouse not working after log-off

i was on AC power (March 31 2016) ... i had all CPUs at 10 to 20% and RAM at 1.9GB
with firefox then i closed all of it...it when about CPU at 0 to 5% and RAM at 700MB ... when i logged off it was ok....

--------------------------------------------------------------

i am able to reproduce the bug on battery power almost every time

what am i looking for in the Logs ... if it happens agian

David, thanks for providing more information!

In terms of looking for issues related to the NVMe driver, this is probably the best approach:

dmesg | grep -i nvme

And then see if there is anything suspicious in the resulting output.

In term of the CPU performance being dramatically different between AC and battery, in my experience with the intel_pstate CPU frequency scaling driver, the performance should be the same. But we'll double-check our findings on this as there could have always been regressions or changes in Stable Release Updates (SRUs) in Ubuntu since we last thoroughly tested this aspect.

Would you say Firefox is the primary application you're using when you encounter this issue?

Thanks!

sometime it happens when no applications are open.... then there are time it does it with firefox ...then there are other time where i log out it does it

( AC power )-( April 2 2016)

dmesg | grep -i nvme

[ 1.566205] nvme0n1: p1 p2 p3
[ 3.007144] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.232528] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
[ 3.293354] tpm_crb(+) intel_lpss_acpi intel_lpss acpi_pad mac_hid cuse parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 psmouse i2c_algo_bit r8169 drm_kms_helper nvme rtsx_pci mii drm ahci libahci wmi i2c_hid pinctrl_sunrisepoint video hid pinctrl_intel
[ 3.377761] Adding 4194300k swap on /dev/nvme0n1p3. Priority:-1 extents:1 across:4194300k SSFS
[ 830.267135] ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 psmouse i2c_algo_bit r8169 drm_kms_helper nvme rtsx_pci mii drm ahci libahci wmi i2c_hid pinctrl_sunrisepoint video hid pinctrl_intel

it was unresponsive before this ...

dmesg | grep -i nvme

[ 1.568416] nvme0n1: p1 p2 p3
[ 2.952006] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.426077] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
[ 3.479894] tpm_crb(+) intel_lpss_acpi intel_lpss mac_hid acpi_pad cuse parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 psmouse i2c_algo_bit drm_kms_helper nvme r8169 drm ahci rtsx_pci libahci mii wmi video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid
[ 3.568380] Adding 4194300k swap on /dev/nvme0n1p3. Priority:-1 extents:1 across:4194300k SSFS

unresponsive at 13:44 on April 2 2016

---------------------------
i attach a log ( clock was stuck at 13:44 )

it looks like more then one more than bug

Laptop when slow on April 4 2016

then i checked ...this

dmesg | grep -i nvme
[ 1.566294] nvme0n1: p1 p2 p3
[ 2.707367] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.080860] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
[ 3.191452] tpm_crb(+) intel_lpss_acpi intel_lpss acpi_pad mac_hid cuse parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 i2c_algo_bit psmouse nvme drm_kms_helper r8169 rtsx_pci mii drm ahci libahci wmi video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid
[ 3.425249] Adding 4194300k swap on /dev/nvme0n1p3. Priority:-1 extents:1 across:4194300k SSFS
[ 3699.595788] ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 i2c_algo_bit psmouse nvme drm_kms_helper r8169 rtsx_pci mii drm ahci libahci wmi video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid

April 5 2016 .....

i check this at 3:50PM (15:50) after a reboot of computer that be came unresponsive at 15:32 ( 3:32PM ) ...All process stop and all hardware stops (mouse, keyboard , clock )

dmesg | grep -i nvme
[ 1.573608] nvme0n1: p1 p2 p3
[ 3.025069] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.222150] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
[ 3.268959] tpm_crb(+) intel_lpss usbhid cuse parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 psmouse i2c_algo_bit drm_kms_helper r8169 nvme rtsx_pci mii drm ahci libahci wmi pinctrl_sunrisepoint video pinctrl_intel i2c_hid hid
[ 3.356338] Adding 4194300k swap on /dev/nvme0n1p3. Priority:-1 extents:1 across:4194300k SSFS

------------------------------------------------------------------------------------------------------------------------------------------

also the clock stopped on 15:32 ( 3:32PM ) . . . . . . i attached a syslog file to help...

i updated to Linux/x86_64 4.2.0-35-generic Kernel

( April 9 2016 )

 dmesg | grep -i nvme
[ 1.558562] nvme0n1: p1 p2 p3
[ 2.811765] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.044546] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
[ 3.091712] tpm_crb(+) acpi_pad joydev mac_hid cuse parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 psmouse ahci libahci i2c_algo_bit r8169 drm_kms_helper nvme rtsx_pci mii drm wmi pinctrl_sunrisepoint pinctrl_intel i2c_hid video hid
[ 3.167745] Adding 4194300k swap on /dev/nvme0n1p3. Priority:-1 extents:1 across:4194300k SSFS
[ 658.416530] ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915 psmouse ahci libahci i2c_algo_bit r8169 drm_kms_helper nvme rtsx_pci mii drm wmi pinctrl_sunrisepoint pinctrl_intel i2c_hid video hid

April 10 2016 .....

 at 2:46PM (14:46) ...All process stop and all hardware stops (mouse, keyboard , clock )

Notes
----------------------------------------

15:32 syslog

Apr 5 15:32:00 -Lemur systemd[1]: Starting Stop ureadahead data collection...
Apr 5 15:32:00 -Lemur systemd[1]: Stopped Read required files in advance.
Apr 5 15:32:00 -Lemur systemd[1]: Started Stop ureadahead data collection

------------------------------------------
14:46 syslog

Apr 10 14:36:10 Lemur anacron[633]: Job `cron.daily' started
Apr 10 14:36:10 Lemur anacron[2055]: Updated timestamp for job `cron.daily' to 2016-04-10

( April 10 2016 ) after i had to restart computer..and.. after All process stop and all hardware stops (mouse, keyboard , clock )...

dmesg | grep -i nvme
[ 1.569856] nvme0n1: p1 p2 p3
[ 4.299314] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 4.496983] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
[ 4.542347] tpm_crb(+) acpi_pad mac_hid cuse parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq dm_mirror dm_region_hash dm_log hid_logitech_hidpp hid_logitech_dj usbhid rtsx_pci_sdmmc i915 psmouse i2c_algo_bit drm_kms_helper r8169 nvme rtsx_pci mii drm ahci libahci wmi video pinctrl_sunrisepoint pinctrl_intel i2c_hid hid
[ 4.660460] Adding 4194300k swap on /dev/nvme0n1p3. Priority:-1 extents:1 across:4194300k SSFS
[ 2159.455427] dm_mirror dm_region_hash dm_log hid_logitech_hidpp hid_logitech_dj usbhid rtsx_pci_sdmmc i915 psmouse i2c_algo_bit drm_kms_helper r8169 nvme rtsx_pci mii drm ahci libahci wmi video pinctrl_sunrisepoint pinctrl_intel i2c_hid hid

Comments 1 ans 2 suggest that there are multiple issues that should have been raised through the System76 support system. Marking the "Ubuntu" part of the report as "Invalid".