Hardware:
Lenovo L450 [Processor: Intel® Core™ i5-5200U CPU @ 2.20GHz × 4; Graphics: Intel® HD Graphics 5500 (Broadwell GT2)]

### Factory delivery (as was) with Microsoft Windows 8 pre-installed on HDD.

### HDD removed and replaced for new SDD: Samsung SSD 850 EVO 250GB.
### Additional RAM slot filled.
### SDD && RAM integrity tested with SMART diagnostics && memtest_86x, respectively. No errors found.


### Ubuntu 15.10 installed on on SDD (formatted and encrypted according to wizard on Ubuntu Live-USB). First occurrence of of 'Error parsing PCC subspaces from PCCT'. Distribution upgraded to Ubuntu 16.04 LTS (is now).


### Error persists:
~ $dmesg | grep -i error
[    0.161660] Error parsing PCC subspaces from PCCT
[   72.911804] EXT4-fs (dm-1): re-mounted. Opts: errors=remount-ro



###### System Information:
### Kernel:
~$ uname -a
Linux louis-l450 4.4.0-59-generic #80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux



### fstab content:
~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
#
# LVM2 Physical Volume (249 GB):
# partition /dev/sda3 encrypted on /dev/mapper/sda3_crypt
/dev/mapper/ubuntu--gnome--vg-root /               ext4    errors=remount-ro 0       1
#
# Boot partition (256 MB):
# /boot was on /dev/sda2 during installation
UUID=bc9d6ff1-fab4-417e-a285-509618092443 /boot           ext2    defaults        0       2
#
# UEFI EFI Bootloader (537 MB):
# /boot/efi was on /dev/sda1 during installation
UUID=969A-DA15  /boot/efi       vfat    umask=0077      0       1
#
# Encrypted Swapping Partition:
#/dev/mapper/ubuntu--gnome--vg-swap_1 none            swap    sw              0       0
/dev/mapper/cryptswap1 none swap sw 0 0

#



### Boot from EFI & info:
~$  mount | grep efivars
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)


~$ sudo dmidecode -t 0 && sudo dmidecode -t 1 && sudo efibootmgr -v
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x0031, DMI type 0, 24 bytes
BIOS Information
	Vendor: LENOVO
	Version: JDET54WW (1.16 )
	Release Date: 08/19/2015
	Address: 0xE0000
	Runtime Size: 128 kB
	ROM Size: 16384 kB
	Characteristics:
		PCI is supported
		PNP is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		ACPI is supported
		USB legacy is supported
		BIOS boot specification is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 1.16
	Firmware Revision: 1.16

# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.




Handle 0x0010, DMI type 1, 27 bytes
System Information
	Manufacturer: LENOVO
	Product Name: 20DTCTO1WW
	Version: ThinkPad L450
	Serial Number: PF0E0Y2S
	UUID: 7A299C81-542D-11CB-9157-B3EF24380744
	Wake-up Type: Power Switch
	SKU Number: LENOVO_MT_20DT_BU_Think_FM_ThinkPad L450
	Family: ThinkPad L450

BootCurrent: 0014
Timeout: 0 seconds
BootOrder: 0014,0007,0013,0008,0009,000A,000B,000C,000D,0012
Boot0000  Setup	FvFile(721c8b66-426c-4e86-8e99-3457c46ab0b9)
Boot0001  Boot Menu	FvFile(126a762d-5758-4fca-8531-201a7f57f850)
Boot0002  Diagnostic Splash Screen	FvFile(a7d8d9a6-6ab0-4aeb-ad9d-163e59a7a380)
Boot0003  Lenovo Diagnostics	FvFile(3f7e615b-0d45-4f80-88dc-26b234958560)
Boot0004  Startup Interrupt Menu	FvFile(f46ee6f4-4785-43a3-923d-7f786c3c8479)
Boot0005  Rescue and Recovery	FvFile(665d3f60-ad3e-4cad-8e26-db46eee9f1b5)
Boot0006  MEBx Hot Key	FvFile(ac6fd56a-3d41-4efd-a1b9-870293811a28)
Boot0007* USB CD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,86701296aa5a7848b66cd49dd3ba6a55)
Boot0008* USB FDD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,6ff015a28830b543a8b8641009461e49)
Boot0009* ATA HDD0	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,91af625956449f41a7b91f4f892ab0f600)
Boot000A* ATA HDD1	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,91af625956449f41a7b91f4f892ab0f601)
Boot000B* ATA HDD2	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,91af625956449f41a7b91f4f892ab0f602)
Boot000C* USB HDD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,33e821aaaf33bc4789bd419f88c50803)
Boot000D* PCI LAN	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,78a84aaf2b2afc4ea79cf5cc8f3d3803)
Boot000E* IDER BOOT CDROM	PciRoot(0x0)/Pci(0x16,0x2)/Ata(0,1,0)
Boot000F* IDER BOOT Floppy	PciRoot(0x0)/Pci(0x16,0x2)/Ata(0,0,0)
Boot0010* ATA HDD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,91af625956449f41a7b91f4f892ab0f6)
Boot0011* ATAPI CD	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,aea2090adfde214e8b3a5e471856a354)
Boot0012* PCI LAN	VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,78a84aaf2b2afc4ea79cf5cc8f3d3803)
Boot0013* Windows Boot Manager	HD(2,GPT,172a6698-28e7-4dd8-969b-c6ca3bec6e0c,0x1f4800,0x82000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
Boot0014* ubuntu	HD(1,GPT,9a94ebc2-b0c3-444d-a283-1817e386e928,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)











So... I do not have a dual boot on my machine, but I suppose the 'Error parsing PCC subspaces from PCCT', accompanies by quite frequent and random system freezes (I have to REISUB) is due to the the following lines:

~$ sudo efibootmgr -v | grep -i windows
Boot0013* Windows Boot Manager	HD(2,GPT,172a6698-28e7-4dd8-969b-c6ca3bec6e0c,0x1f4800,0x82000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................

I am quite new to Linux Ubuntu and have to admit being kind of startled by the Windows Boot Manager running on my system despite using a clean install of Ubuntu on a factory-new SSD...?


I will be glad to provide further information, if necessarry.
Thank You very much in advance.