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| -rw-r--r-- | docs/2026-01-22-ratio-boot-fix-session.org | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/docs/2026-01-22-ratio-boot-fix-session.org b/docs/2026-01-22-ratio-boot-fix-session.org index 463774f..56563d9 100644 --- a/docs/2026-01-22-ratio-boot-fix-session.org +++ b/docs/2026-01-22-ratio-boot-fix-session.org @@ -173,3 +173,69 @@ The TEST kernel (linux 6.15.2) is installed and available in GRUB Advanced menu. - Testing newer kernel features Current recommendation: Use linux-lts for stability, TEST kernel for experimentation. + +* Post-Fix Configuration (Phase 6) + +After boot was working, made kernel 6.15.2 the default with a clean GRUB menu. + +** Made 6.15.2 Default + +1. Created custom GRUB script /etc/grub.d/09_custom_kernels +2. Added clean menu entries: + - "Linux 6.15.2 (default)" + - "Linux LTS 6.12.66 (fallback)" +3. Set GRUB_DEFAULT="linux-6.15.2" + +** Pinned Kernel + +Added to /etc/pacman.conf: +#+BEGIN_SRC +IgnorePkg = linux +#+END_SRC + +This prevents pacman from upgrading linux package until manually unpinned. + +** GRUB UUID Issue + +Initial custom script used wrong boot partition UUID: +- nvme0n1p1: 6A4B-47A4 (wrong - got this from lsblk on first NVMe) +- nvme1n1p1: 6A4A-93B1 (correct - actually mounted at /boot) + +Fix: Updated /etc/grub.d/09_custom_kernels to use 6A4A-93B1 + +** Final GRUB Menu + +#+BEGIN_SRC +1. Linux 6.15.2 (default) <- Boots automatically +2. Linux LTS 6.12.66 (fallback) +3. Arch Linux (ZFS) Linux <- Auto-generated (ignored) +4. Advanced options... +5. UEFI Firmware Settings +6. ZFS Snapshots +#+END_SRC + +** SSH Keys + +Configured SSH key authentication for cjennings@ratio.local to simplify remote access. +Password auth (sshpass) was unreliable from Claude's session. + +* Final System State + +#+BEGIN_SRC +Hostname: ratio.local +Kernel: 6.15.2-arch1-1 (default) +Fallback: 6.12.66-1-lts +Firmware: linux-firmware 20260110-1 +ZFS: All pools healthy, 11 datasets mounted +Boot: Custom GRUB menu with clean entries +Kernel pinned: Yes (IgnorePkg = linux) +#+END_SRC + +* When to Unpin Kernel + +Unpin linux package when linux-lts version >= 6.15: +#+BEGIN_SRC bash +sudo sed -i 's/^IgnorePkg = linux/#IgnorePkg = linux/' /etc/pacman.conf +#+END_SRC + +Then optionally switch back to LTS as default for stability. |