I'm going off topic, away from glxgears, because On Fri, 3 Jun 2022 08:52:01 +1200 Rob Fielding <fieldin...@gmail.com> wrote:
> real mem = 1073741824 (1024MB) > avail mem = 1025531904 (978MB) > mainbus0 at root: model PowerBook5,4 > spdmem0 at mem0: 1GB DDR SDRAM non-parity PC2700CL2.5 > spdmem1 at mem0: 1GB DDR SDRAM non-parity PC2700CL2.5 Your PowerBook5,4 is the same model as mine, with the same problem: we both have the max 2G RAM (with 1G in each slot, spdmem0 and spmem1), but only 1G real mem. 1 of the 2 slots is bad. Several years ago, I had a different PowerBook5,4 with 256M RAM in a slot and nothing in the other slot. One day, the computer refused to boot (it made a strange beep or tone) until I moved the 256M to the other slot. After that, the first slot was always bad. When I upgraded RAM, I needed to remove the 256M and put the 1G in the only working slot. Didn't matter whether I booted Mac OS or OpenBSD; the firmware never used the RAM in the bad slot. Now I have a 2nd PowerBook5,4, and you have a 3rd PowerBook5,4, with the same defect: a bad RAM slot.
