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I have a dell inspiron 7460, that had windows, and some time ago i install ubuntu. Today i format the machine and put kubuntu 18.04. The thing is that always, when i reboot there are errors(before with ubuntu 16 also). Looking to log, i think there are like this. What is it? I have install kubuntu in a SSD, and put /home in a HDD. May be some sort of bad configuration?

22/4/19 21:50   kernel  pcieport 0000:00:1c.4: AER: Corrected error received: 0000:00:1c.4
22/4/19 21:50   kernel  pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Physical Layer, (Receiver ID)
22/4/19 21:50   kernel  pcieport 0000:00:1c.4:   device [8086:9d14] error status/mask=00000001/00002000
22/4/19 21:50   kernel  pcieport 0000:00:1c.4:    [ 0] Receiver Error         (First)

I add info of /etc/fstab

 <file system> <mount point>   <type>  <options>       <dump>  <pass>
 / was on /dev/sdb3 during installation UUID=8abf8883-368a-4541-83f7-0aef21c1a153 /               ext4    errors=remount-ro 0       1
 /boot/efi was on /dev/sdb1 during installation UUID=D63C-01C3  /boot/efi       vfat    umask=0077      0       1
 /home was on /dev/sda1 during installation UUID=e086fc54-edc2-486d-bb3a-0bf9da5aab78 /home           ext4    defaults        0       2
 swap was on /dev/sdb2 during installation UUID=75f51894-ad0f-415e-85d0-bf0938a4e52a none            swap    sw              0       0

I add some information extra of the comand lspci -nn

00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [8086:5904] (rev 02)
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 620 [8086:5916] (rev 02)
00:04.0 Signal processing controller [1180]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem [8086:1903] (rev 02)
00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f] (rev 21)
00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31] (rev 21)
00:15.0 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 [8086:9d60] (rev 21)
00:15.1 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 [8086:9d61] (rev 21)
00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP CSME HECI #1 [8086:9d3a] (rev 21)
00:17.0 SATA controller [0106]: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] [8086:9d03] (rev 21)
00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 [8086:9d10] (rev f1)
00:1c.4 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 [8086:9d14] (rev f1)
00:1c.5 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 [8086:9d15] (rev f1)
00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-LP LPC Controller [8086:9d58] (rev 21)
00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC [8086:9d21] (rev 21)
00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d71] (rev 21)
00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] (rev 21)
01:00.0 3D controller [0302]: NVIDIA Corporation GM108M [GeForce 940MX] [10de:134d] (rev a2)
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)

any clue? What is this error? I try to read about but at least for now, noone explain what is it, only how to stop seeing the problem (not solving it). Also i feel it to slow to boot, its has a Ssd and 16Gb of RAM, its take a "lot" of time.

thx

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