PCI Express (Peripheral Component Interconnect Express) was created in 2004 and is abbreviated to PCIe or PCI-e Version history: 1.0a, 1.1, 2.0, 2.1, 3.0, 3.1, 4.0, 5.0
Questions tagged [pcie]
151 questions
26
votes
2 answers
What does "pci=noaer" or "pci=nomsi" mean?
I had problems installing Ubuntu on my HP Laptop. It used to give some error related to peace bus.
I didn't understand the error, but after visiting many websites I found a solution.
The solution asked me to add a parameter "pci=nomsi" to the…
Ashish Farande
- 363
24
votes
7 answers
Poor IO performance - PCIe NVMe Samsung 950 pro
I just finished a hardware build expecting a big gain from the new NVMe drive. My prior performance was lower than expected (~3gb transferred), so I've replaced the motherboard/cpu/memory/hdd. While performance is double what it was, it is still…
kross
- 747
15
votes
3 answers
Ubuntu 22.04 GPU passthrough (QEMU)
I have found a guide that tells me to do the following to get GPU pass through working on 20.04
apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virt-manager ovmf
lspci -nn returns
01:00.0 VGA compatible controller [0300]:…
Toodarday
- 393
12
votes
2 answers
pcieport 0000:00:1d.0: AER: Corrected error received: 0000:04:00.0
I'm running Kubuntu 20.04. I recently cloned my system from a 2.5" SSD over to a new 2280 (via dd - aka it's an exact replica of the previous install). Everything runs smoothly, however I've noticed that sometimes I see the following during bootup…
J23
- 461
10
votes
2 answers
Is there a way to suppress one specific message from syslog?
I'm getting a lot of
Dec 27 08:35:49 htpc kernel: [ 1552.153797] pciehp 0000:00:1c.5:pcie04: Card not present on Slot(0-2)
Dec 27 08:35:49 htpc kernel: [ 1552.157744] pciehp 0000:00:1c.5:pcie04: Card present on Slot(0-2)
messages in my syslog,…
vava
- 1,422
7
votes
1 answer
Monitoring PCIe lane Usage
Is there a way to monitor PCIe lane bandwidth in Ubuntu 16.04? I would like to see how and if the PCIe lane max bandwidth is bottlenecking training a model in Tensorflow.
user18101
- 193
7
votes
2 answers
Nvidia GeForce 930M driver and PCI bus error
I bought a new laptop ASUS-X556UF and installed Ubuntu 14.04 in it. Now I was trying to install Nvidia drivers according to the tutorial.
At this point I noticed the problem with my system. When I switched to command line mode ( Ctrl+Alt+F1) there…
6
votes
3 answers
Graphics cards so I can have 4 monitors
I currently have a single old graphics card to which I have connected 2 monitors giving me a big desktop of 2560x1024. If I get 2 of the following graphics…
oshirowanen
- 4,047
6
votes
1 answer
35 GB/day of "PCIe Bus Error: severity=Corrected, type=Data Link Layer..." in syslog
Ubuntu 20.04.4 LTS
Dell XPS 8940
latest BIOS 2.4.0
New install, and system seems to be working fine, but I have 35 gigs/day of syslog error messages like:
Feb 25 00:00:10 mumsilar kernel: [32409.088886] pcieport 0000:00:01.0: AER: Multiple…
Johnny Petro
- 63
6
votes
3 answers
NVMe SSD slow write speed
I have a NUC (BEH model) and a M.2 SSD PCIe gen3 NMVe card (Samsung 970 pro 512GB) and I have a slow and fast write speed result in Ubuntu 18.04.3 with two different kernels. I used ukuu for kernel switching and in kernel 5.0+ which comes standard…
Pieter
- 81
5
votes
2 answers
How can I determine which GPU card is running at PCI Express 2.0 x16 & which is using x8?
Is there a way to determine the speed of the PCI Express connection to a specific card? I have three cards plugged in:
two Nvidia GTX 480's (one at x16 & and one at x8)
one Nvidia GTX 460 running at x8
Is there some way, either by a function call…
M. Tibbits
- 1,418
5
votes
4 answers
crippling repeating "pciehp card not present" notifications
When using ubuntu (12.04, both installed and on a live usb) I get a lot of these messages:
pciehp 0000:00:1c.5:pcie04: Card not present on Slot(37)
pciehp 0000:00:1c.5:pcie04: Card present on Slot(37)
And with a lot I mean about 20 per second. This…
Nanne
- 8,685
5
votes
0 answers
Slow NVMe speed on new install
I've just setup an HP z230 Xeon E3 1225 v3 machine with an HP TurboDrive G1, with a Seagate Firecuda NVMe SSD. I was expecting 2-3000MB/s read speeds, but am seeing way less than that. I don't care too much about a few hundred here and there, but…
Chris McV
- 51
5
votes
0 answers
grub2 not detecting pci-e nvme disk (in GRUB command line) old BIOs motherboard
I have an old motherboard that doesn't support nvme boot. I've connected nvme disk using a pci-e expansion card.
NVME is detected in windows and Linux when booted up from old HDD.
Since my motherboard doesn't support nvme boot I installed grub2…
emaditaj
- 51
4
votes
1 answer
What Fibre Cards can I use with Ubuntu 10.04 LTS Server
What PCIe based fibre cards can I use with Ubuntu? I have been trying to find a native fibre card which works with Ubuntu Server but am unable to. I would really appreciate any help you can point me towards if possible.
Thank you
user12113