Marc S. Weidner
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
69 lines
3.0 KiB
Bash
69 lines
3.0 KiB
Bash
#!/bin/bash
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# SPDX-Version: 3.0
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# SPDX-CreationInfo: 2025-05-05; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.live.builder.git
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# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
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# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-FileType: SOURCE
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# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
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# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
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# SPDX-PackageName: CISS.debian.live.builder
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# SPDX-Security-Contact: security@coresecret.eu
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guard_sourcing
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#######################################
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# Notes Textbox
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# Arguments:
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# None
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#######################################
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check_provider() {
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clear
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cat << EOF >| "${VAR_NOTES}"
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Build : ${VAR_VERSION}
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Commit : ${VAR_GIT_REL}
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Press 'EXIT' to continue with CISS.debian.live.builder.
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When you provision ISO images using the Netcup provider, you MUST always supply a globally unique identifier
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for each image via the --control argument. If you omit this flag or reuse an existing identifier, Netcup's
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backend will automatically locate and mount the oldest ISO carrying that same name. In practice, this means
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you might believe you're booting a freshly uploaded image, but in fact, the system silently reattaches an
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earlier one-leading to confusing failures and wasted troubleshooting time.
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A separate but related issue emerges when booting certain Debian "cloud" kernel images-specifically those
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matching the patterns *.+bpo-cloud-amd64 or *.+bpo-cloud-arm64-on a Netcup G11 instance or on a Hetzner VM.
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After the initramfs is loaded, the console output often becomes garbled or completely unreadable. This is not
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due to a kernel panic, but rather to a mismatch between the framebuffer mode expected by the initramfs and the
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one actually provided by the virtual hardware. Common workarounds, like editing the boot entry (e) and appending
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- 'nomodeset', or
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- 'vga=0x318',
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do not resolve the issue because they address legacy VGA modes rather than the EFI framebuffer parameters used
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in modern cloud images.
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To mitigate this, you can:
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- Use a plain Debian kernel (e.g., linux-image-amd64) instead of the bpo-cloud variants, which are optimized
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for cloud-init but presume a different console setup.
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- Explicitly set an EFI-compatible framebuffer by adding something like 'video=efifb:mode=auto' to the kernel
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command line. This aligns the initramfs console driver with the actual firmware framebuffer.
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- Build a custom initramfs that includes the correct video modules or switches back to a serial console. For
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example, adding 'console=ttyS0,115200' can force all early messages to the serial port bypassing the
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graphical framebuffer entirely.
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EOF
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dialog --no-collapse \
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--ascii-lines \
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--clear \
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--backtitle "CISS.debian.live.builder" \
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--title "Important Notes" \
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--scrollbar \
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--textbox "${VAR_NOTES}" 32 128
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clear
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}
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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