Martin aa4ac3a335 docs: standardize sysfs paths on card0 for BC-250 ...

The BC-250 enumerates as /sys/class/drm/card0 on a typical install (no
secondary GPU). Verified live on Fedora 43, kernel 7.0.9, PCI 1002:13fe.
Many doc snippets hardcoded card1, so copy-paste failed on a stock single-
GPU board.

Replaced /sys/class/drm/card1/ with /sys/class/drm/card0/ across:
bios/overclocking.md, bios/vram.md, drivers/radv.md,
getting-started/quick-start.md, linux/{arch,bazzite,cachyos,debian,fedora}.md,
reference/quick-reference.md, system/{governor,sensors}.md,
troubleshooting/{boot,display,performance,stability}.md.

Existing card0-vs-card1 disclaimers preserved at governor.md L166/L503,
quick-start.md L78, bazzite.md L104, kernel.md L222 (and quick-reference.md
intro rewritten to lead with card0 + note the iGPU edge case).

2026-05-31 16:09:58 +02:00

..

boot.md

docs: standardize sysfs paths on card0 for BC-250

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display.md

docs: standardize sysfs paths on card0 for BC-250

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performance.md

docs: standardize sysfs paths on card0 for BC-250

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stability.md

docs: standardize sysfs paths on card0 for BC-250

2026-05-31 16:09:58 +02:00