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I have a fairly new SAMSUNG PRO Plus 256 GB microSD card. It's manufactured in June 2024 according to software. The model code on the package is MB-MD256SA/AM. The ratings include UHS 1, C10, U3, V30, A2. Details are below.
This is in a new Raspberry Pi 5 (8 GB).
I observed apt was slow to unpack packages and looked in dmesg and found many errors like:
mmc0: running CQE recovery
After some searching, I came across this forum post: "Testing class A2 SD Cards with Command Queueing on Pi 5" https://forums.raspberrypi.com/viewtopic.php?t=367459
Based on that, I turned dtparam=sd_cqe=off, which appears to work around the problem.
This commit c9b61d1 disables CQE for similar cards that were made in 2023. My card from June 2024 appears to need this same quirk.
Let me know if you'd like any additional tests done with this card (even potentially destructive ones).
Steps to reproduce the behaviour
Install Raspberry Pi OS (64-bit) and upgrade the kernel. Run dmesg -w.
Describe the bug
I have a fairly new SAMSUNG PRO Plus 256 GB microSD card. It's manufactured in June 2024 according to software. The model code on the package is MB-MD256SA/AM. The ratings include UHS 1, C10, U3, V30, A2. Details are below.
This is in a new Raspberry Pi 5 (8 GB).
I observed
apt
was slow to unpack packages and looked indmesg
and found many errors like:After some searching, I came across this forum post: "Testing class A2 SD Cards with Command Queueing on Pi 5" https://forums.raspberrypi.com/viewtopic.php?t=367459
Based on that, I turned
dtparam=sd_cqe=off
, which appears to work around the problem.This commit c9b61d1 disables CQE for similar cards that were made in 2023. My card from June 2024 appears to need this same quirk.
Let me know if you'd like any additional tests done with this card (even potentially destructive ones).
Steps to reproduce the behaviour
Install Raspberry Pi OS (64-bit) and upgrade the kernel. Run
dmesg -w
.Device (s)
Raspberry Pi 5
System
Logs
The CQE recoveries continue.
Additional context
No response
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