Hello Riccardo, On Fri, 2025-09-19 at 17:06 +0200, Riccardo Mottola wrote: > At this point I am worried, but the NetBSD 10.1 Hard disk back in the > tray, perform a cold start... and get a login prompt: Console is smooth > and no funny chars.
As I said before, different operating systems and kernels can behavior differently and one operating system working doesn't prove the hardware doesn't have any issues. For example, NetBSD allocates memory from bottom to top while Linux allocates memory from top to bottom. Thus, it can be that NetBSD runs fine because it doesn't access any of the faulty memory right after startup. It could also be that Linux uses more performance-optimized code than NetBSD which may trigger problems on your hardware while the unoptimized code does not. For example, the patches that we are testing here are addressing issues with performance-optimized code for copying code between the kernel and userspace. It could be that NetBSD doesn't have such optimizations. I can therefore only recommend to verify your hardware first and address any issues with empty NVRAM batteries which may lead to incorrect NVRAM contents. We have had one user reporting stability issues resolved after resetting the SP on his T5240, see [1]. So, it's really not too far fetched to think your problems may indicate a problem with your hardware. That's why you have to make sure everything is working properly, including the NVRAM. > Interesting is that the Netra T1 and Fire 120 are quite similar in > hardware... the latter is a bit higher spec'd (e.g. accepts double > memory) but essentially differs with the lower-spec'd embedded > UltraSparc IIe vs high-performance IIi. > (the advantage is that the IIe just needs a simple CPU cooler with fan, > no air ducts and is so much quieter... almost like a workstaiton). All variants of the UltraSPARC I and II CPUs use the same assembler optimizations in the Linux kernel. There is no code optimized specifically for UltraSPARC II or even variants of it. Adrian > [1] https://lists.debian.org/debian-sparc/2025/09/msg00062.html -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
