Ubuntu • Re: Can RPi5 Ubuntu desktop 24.4 LTS run PCIe 3 for NVMe?

Code:

pi@pi-desktop:~$  sudo hdparm -t --direct /dev/nvme0n1[sudo] password for pi: /dev/nvme0n1: Timing O_DIRECT disk reads: 2438 MB in  3.00 seconds = 812.08 MB/secpi@pi-desktop:~$ 

Code:

dtparm=pciex1_gen=2 

Code:

dtparm=pciex1_gen=3

Code:

dtparm=pciex1_gen=2 or 3

Code:

pi@pi-desktop:~$ sudo lspci -vvv..0000:01:00.0 Non-Volatile memory controller: Sandisk Corp SanDisk Ultra 3D / WD Blue SN550 NVMe SSD (rev 01) (prog-if 02 [NVM Express])..DevSta:CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-LnkCap:Port #0, Speed 8GT/s, Width x4, ASPM L1, Exit Latency L1 <8usClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+LnkCtl:ASPM Disabled; RCB 64 bytes, Disabled- CommClk+ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-LnkSta:Speed 8GT/s, Width x1 (downgraded)

Code:

pi@pi-desktop:~$ uname -aLinux pi-desktop 6.8.0-1010-raspi #11-Ubuntu SMP PREEMPT_DYNAMIC Thu Aug  8 23:22:41 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux