43c0a5e2b5
Recovery is reboot → GRUB “snapshots” submenu. snapper rollback does not change what GRUB boots (rootflags=subvol=@). Same wording in README Recovery and docs/hardware.md.
39 lines
1.7 KiB
Markdown
39 lines
1.7 KiB
Markdown
# Hardware and recovery
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## GPUs
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BOS ships the generic **Mesa** stack. AMD and Intel work out of the box.
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**NVIDIA is unsupported.** The proprietary driver is not included, NVIDIA
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firmware is not on the image, and there is no Hyprland NVIDIA env wiring.
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Installing `nvidia` / `nvidia-utils` after the fact is not a product path.
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On first graphical login, `bos-first-boot` probes `lspci` / `/proc` and,
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if an NVIDIA GPU is present, writes `~/.local/state/bos/nvidia-offer.json`
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and notifies that the proprietary driver is not on the ISO. It does **not**
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install anything. bos-settings can grow a panel that reads that file later.
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The same probe leaves a HiDPI hint at `~/.local/state/bos/hidpi-hint.json`
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when scale > 1 or the panel is dense; it never rewrites `monitors.json`.
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A VM without `/dev/dri` gets a notification only.
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## Recovery
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An update that breaks the system is recovered by **reboot → GRUB
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“snapshots” submenu** (grub-btrfs). `snapper rollback` will not change
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what GRUB boots (`rootflags=subvol=@`).
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`snapper rollback` swaps the default subvolume; the installed `grub.cfg`
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still boots `@`. Pick the grub-btrfs entry so the kernel command line
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matches the snapshot you want.
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BOS Settings → Snapshots lists snapshot number, date, and description so
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you know which GRUB entry to pick. It does not roll the running root back
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in place. Bakery desktop apps live under `/usr/local` on `@`, so those
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same snapshots include them.
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If the system will not boot (lost EFI entry / broken GRUB), boot the live
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ISO and run `sudo bos-rescue`. It mounts `@` + the ESP and offers the same
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`grub-install` NVRAM + `--removable` sequence as `post-install.sh`.
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A/B root swapping is not implemented. See the README Recovery section.
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