Public bug reported:
Booting the latest eoan daily on a Pi4 with >1Gb of RAM, only the first
1Gb of RAM appears accessible:
ubuntu@ubuntu:~$ free
total used free shared buff/cache
available
Mem: 931920 185484 504748 3664 241688
723820
Swap: 0 0 0
However, adjusting the config.txt so that the kernel is booted directly
without u-boot in between results in the full 4Gb being accessible:
ubuntu@ubuntu:~$ free
total used free shared buff/cache
available
Mem: 3884464 189852 3457504 3656 237108
3636004
Swap: 0 0 0
** Affects: u-boot (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
Booting the latest eoan daily on a Pi4 with >1Gb of RAM, only the first
1Gb of RAM appears accessible:
- ubuntu@ubuntu:~$ free
- total used free shared buff/cache
available
- Mem: 931920 185484 504748 3664 241688
723820
- Swap: 0 0 0
+ ubuntu@ubuntu:~$ free
+ total used free shared buff/cache
available
+ Mem: 931920 185484 504748 3664 241688
723820
+ Swap: 0 0 0
However, adjusting the config.txt so that the kernel is booted directly
without u-boot in between results in the full 4Gb being accessible:
- ubuntu@ubuntu:~$ free
- total used free shared buff/cache
available
- Mem: 3884464 189852 3457504 3656 237108
3636004
- Swap: 0 0 0
+ ubuntu@ubuntu:~$ free
+ total used free shared buff/cache
available
+ Mem: 3884464 189852 3457504 3656 237108
3636004
+ Swap: 0 0 0
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https://bugs.launchpad.net/bugs/1847500
Title:
Full RAM on Pi4 isn't accessible when using u-boot
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