wugj
1
Hi
My platform is Xavier NX, I found in different Jetpack, the PCIe GEN4 SSD LnkSta is different.
Jetpack 5.1.2 && Jetpack 5.1.1: LnkSta Speed 8GT/s(Only GEN3).
Jetpack 5.0.2: LnkSta Speed 16GT/s(GEN4 OK).
I want to know, what do you update in this two version that may cause this downgrade in LnkSta of SSD interface?
DaneLLL
3
Hi,
There are fixed in later releases, so it may be an issue in 5.0.2 that the information is not correctly parsed.
wugj
4
Did you mean in the version after 5.1.2 will fix this issue? If that’s ture, when will you publish?
Ins
5
I’ve had similar problems with GEN4 performance even with the “jetson_clocks” commands under version 5.1.2, but 5.0.2 is no problem
DaneLLL
6
Hi,
Please share the NVMe SSD card you are using. It may be achieved up to GEN3 on Xavier NX instead of GEN4. Due to certain constraint of Xavier NX.
wugj
7
My SSD is SUMSUNG 990 PRO 1TB
please attach full lspci -vvv and dmesg as text file.
wugj
9
xavier512dmsg.txt (74.6 KB)
xavier502pci.txt (16.3 KB)
xavier502dms.txt (73.6 KB)
xavier512pci.txt (16.3 KB)
Please notify line 483 in xavier512dmsg.txt
please modify the tegra194-p3668-common.dtsi → max-link-speed = <3>; to 4 so that it will use gen4 speed.
wugj
13
OK , It works, But why you do this limit in latest Jetpack, is there any risk?
system
Closed
14
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