All Questions
15 questions
1
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239
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NVMe gen4 disks running slow in real world usage (rsync)
We have big difference between FIO tests and "real" speed via rsync for example.
We are facing this problem on U.2 gen4 and M.2 gen4 + adapter as well. Totally same results for both. U.2 is ...
0
votes
0
answers
363
views
PCIe link speed limit in dmesg when hot reset "PCIe 8.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe x4 link at 0000:02:02.0"
When we do PCIe hot reset and meet below log in dmesg.
The PCIe device is PCIe gen4x4 NVME SSD.
duplicate step:
power on, gen4x4
PCIe hot reset,
relink up, found PCIe link in gen1x4, with dmesg show ...
- 1
0
votes
1
answer
206
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Second nvme drive on expansion card not detected
A computer I'm trying to work on has 4 slot nvme expansion card which plugs into the PCI Express slot. I have two drives to install but it does not seem to recognise either of them. They are both WD ...
- 43
0
votes
0
answers
229
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Unable to boot from usb onto pcie nvme ssd
I have been trying for days to boot from a usb drive containing the rEFIND bootloader. I had a hard drive with Ubuntu 22.04 on it and cloned it onto an NVME SSD mounted in a PCIEx16 slot.
With the ...
- 155
1
vote
0
answers
145
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How can I boot ubuntu 22.04 from a USB flash drive but then run it from a non-bootable drive?
I have an old Dell Optiplex 745 SFF that I want to use as a Plex server. It has USB 2.0 ports, one available SATA connection, and one PCIe slot (x16). I'd like to use the SATA connection for a 2 TB ...
- 31
0
votes
1
answer
1k
views
Why mdadm RAID does **NOT** boost reading performance?
I add 2 NVMe SSDs(Samsung 980 Pro) into my PC as tablespace of postgresql, while the OS boots from another SATA SSD(Samsung 860 EVO) as before.
These 2 nvme m.2 SSDs have a basic performace about ...
- 107
5
votes
0
answers
3k
views
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 ...
- 51
2
votes
1
answer
1k
views
PCIe extension card for NVMe SSD isn't recognized
I've bought the ICY BOX PCIe extension card for M.2 NVMe SSD (IB-PCI214M2-HSL), and an AORUS NVME Gen4 SSD on it, but my system doesn't recognize it...
When I do this command:
sudo lsblk -f
My disk ...
1
vote
1
answer
4k
views
Ubuntu sees only one of two nvme drives that are visible to Bios and Windows 10: PCI problem
I upgraded a MSI GT73VR laptop which has two NVME slots (and one SATA slot). I discovered that Ubuntu 20.04 and 18.04 can only see one of the drives (in the first slot). Switching the M.2 cards allows ...
- 61
6
votes
3
answers
14k
views
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 ...
- 81
1
vote
0
answers
2k
views
Ubuntu 18.04 installer unable to detect PCIe NVMe SSD
I have a HP Omen dg0019tx laptop with Win 10, NVIDIA RTX2080, 2 numbers of 1 TB PCIe NVMe SSD configured as RAID 0 Volume. I tried to dual boot it with Ubuntu 18.04, however, Ubuntu is unable to ...
- 11
5
votes
0
answers
11k
views
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 ...
- 51
0
votes
1
answer
602
views
Installing Ubuntu on HP envy x360 15cn does not detect the PCIe NVMe SSD drive
I have a HP envy x360 laptop.
I have 2 two disks on it.
1. PCIe NVMe SSD 500GB(windows pre-installed)
2. SATA Seagate HDD 1TB
I tried installing many linux operating systems on it including Ubuntu, ...
- 101
2
votes
2
answers
1k
views
NVMe for 16.04 OS [closed]
Would Ubuntu run on the "250GB Samsung 960 Evo M.2 2280 NVMe PCIe 3.0" card?
(I have a Dell Notebook PCIe slot.)
- 61
-2
votes
1
answer
4k
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M2 PCIe NVMe SSD driver
I´m wondering if or what Ubuntu version supports my shiny new M2 PCIe 3.0 NVMe SSD (Samsung PM951 MZVLV 1TB), so Ubuntu will see it when I boot it from USB.
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