I am experiencing frequent freezes on my Ubuntu 16.04, but I cannot pinpoint the cause. It happens usually when I am sitting on the computer and not when it's idle, so it must be related to an action that I am doing at that time, but it seems to happen for no apparent reason.
I think that this issue might be related to my graphics drivers, because when it occurs my screens become distorted (with grey vertical stripes - looks nothing like the screen I had before the freeze). Sound repeats continuously when this happens. Additionally, my system becomes completely unresponsive and I can't even Alt+PrScrn+REISUB it – sometimes even the hard reset button doesn't work.
I searched stackoverflow for similar issues and it was suggested that this might be related to grub, so I applied the intel_idle.max_cstate=1 fix; unfortunately it didn't work.
I also have radeon.dpm=0 kernel setting in my grub config, because after a kernel update (~6+ months back) my screens were completely black and this seemed to fix my issue. I don't think that it's related to the issue I'm experiencing now.
Edit 1: The suggested solution would not solve my problem. I checked my packages and they are not yet updated to the following that cause the issue.
libegl1-mesa 17.2.4-0ubuntu1~16.04.2
libgbm1 17.2.4-0ubuntu1~16.04.2
libgl1-mesa-dri 17.2.4-0ubuntu1~16.04.2
libwayland-egl1-mesa 17.2.4-0ubuntu1~16.04.2
Edit 2: I was referring to the first linked solution. Sorry for missing the second one, when on the edit screen you can't see linked solutions. So on to what I've done, I fired up my terminal and did a:
❯ for p in libegl1 libgbm1 libgl1-mesa-dri libwayland-egl1-mesa ; do dpkg -l | grep $p | awk '{print $2, $3}' ; done
libegl1-mesa:amd64 12.0.6-0ubuntu0.16.04.1
libgbm1:amd64 12.0.6-0ubuntu0.16.04.1
libgl1-mesa-dri:amd64 12.0.6-0ubuntu0.16.04.1
libgl1-mesa-dri:i386 12.0.6-0ubuntu0.16.04.1
libwayland-egl1-mesa:amd64 12.0.6-0ubuntu0.16.04.1
As you can see, my installed packages are all 12.0.6 and NOT 17.2.4 which cause the issue in the GUI/Unity crashing in 16.04 LTS after updates 2018-01-04, compiz segfaults.
As for Ubuntu 14.04 has visual artifacts and freezes, first of all the description is a lot like my problem, however:
I am not getting video RAM artifacts. Everything is fine, up until the freeze. I will take a picture the next time I get a freeze, because it is hard to describe; it looks nothing like the previous screen I was displaying and it is usually a motiff of vertical grey stripes, something like this one. After the restart I get no system problem detected, nor I get artifacts. I've extensively tried to pinpoint the problem by grepping
/var/logbefore the moment of the freeze, however it is weirdly silent.My machine is a dual boot with windows 10, an operating system that I use mostly for gaming. As it is suggested in the linked answer, if this problem was caused due to a hardware error, I'd be getting similar behaviour (or at least restarts, freezes, blue screens, etc) in windows, too. However, I don't, which leads me to believe that the cause lies in the software.
The command that it is suggested I should run for the proprietary drivers and its output:
❯ ubuntu-drivers devices
== cpu-microcode.py ==
driver : intel-microcode - distro free
more hardware details:
❯ sudo lshw -c video
*-display
description: VGA compatible controller
product: Juniper XT [Radeon HD 5770]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:07:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:25 memory:d0000000-dfffffff memory:fbfc0000-fbfdffff ioport:e000(size=256) memory:fbfa0000-fbfbffff
❯ uname -a
Linux apparatus 4.4.0-109-generic #132-Ubuntu SMP Tue Jan 9 19:52:39 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Update: I just had a freeze, but the system came back almost immediately (after 1-2 seconds) by itself (I was AFK, so I didn't reset it, touch it, or did anything to it). I noticed that it froze because music was playing on youtube.
I immediately sat down at checked /var/log for updated logfiles. I've got the following two that were updated at the time of the freeze:
-rw-r----- 1 syslog adm 892624 Feb 3 18:21 kern.log
-rw-r----- 1 syslog adm 29470 Feb 3 18:21 syslog
and their content:
/var/log
❯ tail -n 10 kern.log
Feb 3 15:34:32 apparatus kernel: [ 3682.917955] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.2/2-1.2.2:1.0/0003:046D:C077.0008/input/input21
Feb 3 15:34:32 apparatus kernel: [ 3682.918115] hid-generic 0003:046D:C077.0008: input,hidraw3: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:1d.0-1.2.2/input0
Feb 3 15:39:54 apparatus kernel: [ 4005.321271] perf: interrupt took too long (3920 > 3912), lowering kernel.perf_event_max_sample_rate to 51000
Feb 3 18:21:01 apparatus kernel: [13672.371035] clocksource: timekeeping watchdog on CPU1: Marking clocksource 'tsc' as unstable because the skew is too large:
Feb 3 18:21:01 apparatus kernel: [13672.371045] clocksource: 'acpi_pm' wd_now: 9fec9b wd_last: e2aeff mask: ffffff
Feb 3 18:21:01 apparatus kernel: [13672.371048] clocksource: 'tsc' cs_now: 213bf758e258 cs_last: 2139d0a0958a mask: ffffffffffffffff
Feb 3 18:21:01 apparatus kernel: [13672.371051] tsc: Marking TSC unstable due to clocksource watchdog
Feb 3 18:21:01 apparatus kernel: [13672.372782] TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.
Feb 3 18:21:01 apparatus kernel: [13672.372785] sched_clock: Marking unstable (13671910344755, 462317015)<-(13672496000909, -123220420)
Feb 3 18:21:01 apparatus kernel: [13672.377012] clocksource: Switched to clocksource acpi_pm
and
/var/log
❯ tail -n 200 syslog
...
Feb 3 17:55:01 apparatus CRON[13191]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Feb 3 18:05:01 apparatus CRON[13508]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Feb 3 18:15:01 apparatus CRON[13819]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Feb 3 18:17:01 apparatus CRON[13898]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Feb 3 18:21:01 apparatus kernel: [13672.371035] clocksource: timekeeping watchdog on CPU1: Marking clocksource 'tsc' as unstable because the skew is too large:
Feb 3 18:21:01 apparatus kernel: [13672.371045] clocksource: 'acpi_pm' wd_now: 9fec9b wd_last: e2aeff mask: ffffff
Feb 3 18:21:01 apparatus kernel: [13672.371048] clocksource: 'tsc' cs_now: 213bf758e258 cs_last: 2139d0a0958a mask: ffffffffffffffff
Feb 3 18:21:01 apparatus kernel: [13672.371051] tsc: Marking TSC unstable due to clocksource watchdog
Feb 3 18:21:01 apparatus kernel: [13672.372782] TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.
Feb 3 18:21:01 apparatus kernel: [13672.372785] sched_clock: Marking unstable (13671910344755, 462317015)<-(13672496000909, -123220420)
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: snd_pcm_avail() returned a value that is exceptionally large: 654084 bytes (3707 ms).
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: snd_pcm_dump():
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Soft volume PCM
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Control: PCM Playback Volume
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: min_dB: -51
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: max_dB: 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: resolution: 256
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Its setup is:
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stream : PLAYBACK
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: access : MMAP_INTERLEAVED
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: format : S16_LE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: subformat : STD
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: channels : 2
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: rate : 44100
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: exact rate : 44100 (44100/1)
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: msbits : 16
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: buffer_size : 16384
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_size : 8192
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_time : 185759
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_mode : ENABLE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_type : MONOTONIC
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_step : 1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: avail_min : 16129
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_event : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: start_threshold : -1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stop_threshold : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_threshold: 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_size : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: boundary : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel MID' device 0 subdevice 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Its setup is:
Feb 3 18:21:01 apparatus kernel: [13672.377012] clocksource: Switched to clocksource acpi_pm
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stream : PLAYBACK
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: access : MMAP_INTERLEAVED
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: format : S16_LE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: subformat : STD
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: channels : 2
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: rate : 44100
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: exact rate : 44100 (44100/1)
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: msbits : 16
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: buffer_size : 16384
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_size : 8192
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_time : 185759
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_mode : ENABLE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_type : MONOTONIC
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_step : 1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: avail_min : 16129
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_event : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: start_threshold : -1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stop_threshold : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_threshold: 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_size : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: boundary : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: appl_ptr : 331041089
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: hw_ptr : 331188226
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: snd_pcm_delay() returned a value that is exceptionally large: -547748 bytes (-3105 ms).
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: snd_pcm_dump():
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Soft volume PCM
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Control: PCM Playback Volume
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: min_dB: -51
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: max_dB: 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: resolution: 256
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Its setup is:
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stream : PLAYBACK
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: access : MMAP_INTERLEAVED
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: format : S16_LE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: subformat : STD
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: channels : 2
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: rate : 44100
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: exact rate : 44100 (44100/1)
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: msbits : 16
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: buffer_size : 16384
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_size : 8192
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_time : 185759
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_mode : ENABLE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_type : MONOTONIC
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_step : 1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: avail_min : 16129
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_event : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: start_threshold : -1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stop_threshold : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_threshold: 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_size : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: boundary : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel MID' device 0 subdevice 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: Its setup is:
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stream : PLAYBACK
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: access : MMAP_INTERLEAVED
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: format : S16_LE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: subformat : STD
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: channels : 2
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: rate : 44100
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: exact rate : 44100 (44100/1)
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: msbits : 16
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: buffer_size : 16384
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_size : 8192
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_time : 185759
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_mode : ENABLE
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: tstamp_type : MONOTONIC
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_step : 1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: avail_min : 16129
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: period_event : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: start_threshold : -1
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: stop_threshold : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_threshold: 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: silence_size : 0
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: boundary : 4611686018427387904
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: appl_ptr : 331051329
Feb 3 18:21:01 apparatus pulseaudio[4553]: [alsa-sink-ALC888 Analog] alsa-util.c: hw_ptr : 331188266
