Ubuntu Wiki

Debugging Scenarios

• See the Kernel/Symptom based debugging guide

• Kernel/Debugging/Backlight -- how to debug issues related to backlight brightness control

• Kernel/Debugging/HighTemperatures -- how to debug thermal issues and/or fan related problems

• Hotkeys -- How to debug non-working hotkeys.

• Kernel/DebuggingUpdateErrors -- Debugging common errors seen when updating/upgrading

• Kernel/DebuggingSchedulingWhileAtomic -- How to gather a trace to help debug "scheduling while atomic" bugs

• DebuggingKernelSuspend -- Help debugging kernel suspend

• DebuggingKernelSuspendHibernateResume -- Help debugging suspend/resume and hibernate/resume problems.

• Kernel/LinuxWireless -- Testing and reporting bugs to the upstream linux wireless developers

• DebuggingKernelOops -- Analysing Kernel Oopses

• DebuggingKernelBoot -- debugging Kernel boot issues

Debugging Guides

• BIOSandUbuntu -- Debugging BIOS issues on Ubuntu (DSDT, Reboot, Suspend/Resume)

• DebuggingSoundProblems -- Basic troubleshooting tips for debugging sound problems

• DebuggingIRQProblems -- debugging interrupt related issues

• DebuggingACPI -- debugging ACPI (Advanced Configuration and Power Interface)

• DebuggingSystemCrash -- Tips for gather information regarding system crashes and lockups

Debugging Tools/Information

• Kernel/DebuggingVoodoo -- Q&A for strange symptoms and how to debug

• DebuggingIRQProblems -- HEFIBootLoaderselp debugging common IRQ problems.

• KernelPPA -- Instructions on how to use the kernel team's PPA as well using a specific kernel developer's PPA.

• Kernel/MainlineBuilds -- How to use mainline kernels for debugging.

• Ubuntu to mainline mapping -- a table of Ubuntu releases and which mainline version they are based on including the current release pocket assignments.

• Kernel/KernelDebuggingTricks - Some kernel debugging tricks and tips.

• Kernel/Debugging/USB -- How to debug USB problems

• Kernel/CrashdumpRecipe -- How to use linux-crashdump to capture a kernel oops/panic

• Kernel/Netconsole -- Configuring console over network using netconsole

• Kernel/Firmware -- All about firmware and how to debug firmware loading issues