Troubleshooting

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 * [[DebuggingKernelSuspend|Suspend and Resume issues]]
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 * [[X/i8xxUnsupported|i855 is Unsupported]] - Explanation of why i845, i855, i865, etc. chips aren't supported
 * [[X/HybridGraphics|Hybrid Graphics is Unsupported]] - Not officially supported, but the community has workarounds
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 * [[X/Troubleshooting/NvidiaDriverMissingKernelDriver|No kernel driver for NVIDIA]]
 * [[X/MonitorDetection|Monitor Detection problems]]
 * [[X/Troubleshooting/Freeze|Freeze issues]]
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 * [[X/Troubleshooting/Freeze|Freeze issues]]  * [[Kernel/Debugging/Backlight|Backlight issues]]
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 * [[X/Troubleshooting/NvidiaDriverMissingKernelDriver]]
 * [[X/MonitorDetection|Monitor Detection problems]]
 * [[X/i8xxUnsupported|i855 is Unsupported]] - Explanation of why i845, i855, i865, etc. chips aren't supported
 * [[X/HybridGraphics|Hybrid Graphics is Unsupported]] - Not officially supported, but the community has workarounds
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 * [[DebuggingKeyboardDetection|Keyboard detection]]
 * [[DebuggingTouchpadDetection|Touchpad detection]]
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Booting
 * [[https://help.ubuntu.com/community/BootOptions|Boot Options]]
 * [[DebuggingKernelBoot|Debugging Kernel Boot Problems]]
 * [[X/NonGraphicalBoot|Non-Graphical Booting]] - Running X manually, without gdm
 * [[X/Debugging/WirelessWithoutX|Wireless Without X]] - How to get a wireless network connection without X.
 * [[X/Debugging/WiredWithoutRouter|Direct Wired Without WAP]] - How to connect two laptops with direct ethernet cord.

Crashes and Freezes
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 * [[X/Bisecting]] - Using bisection techniques to solve regressions or backport fixes  * [[X/FixingCrashes|X Crash Fixing]] - How to fix X crashes
 * [[X/InterpretingIntelGpuDump|Interpreting GPU Dumps]] - Ringbuffers, batchbuffers, and the meaning of `intel_gpu_dump` output
 * [[X/DebuggingWithValgrind|Valgrind]] - Debugging memory leaks

Other Techniques
 * [[X/Bisecting|X Bisecting]] - Using bisection techniques to solve regressions or backport fixes
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 * [[X/FixingCrashes|X Crash Fixing]] - How to fix X crashes
 * [[X/InterpretingIntelGpuDump]] - Ringbuffers, batchbuffers, and the meaning of `intel_gpu_dump` output
 * [[X/DebuggingWithValgrind]]
 * [[X/NonGraphicalBoot]] - Running X manually, without gdm
 * [[X/Debugging/WirelessWithoutX|Wireless Without X]] - How to get a wireless network connection without X.
 * [[X/Debugging/WiredWithoutRouter|Direct Wired Without WAP]] - How to connect two laptops with direct ethernet cord.
 * [[https://help.ubuntu.com/community/BootOptions|BootOptions]]
   * [[http://wiki.cchtml.com/index.php/Ubuntu_Feisty_Installation_Guide|fglrx installation on Ubuntu]]
 * DebuggingUsplash
 * [[X/Dev/DeviceTreeHWDetection]]
 * [[X/Dev/DeviceTreeHWDetection|Device Tree]]
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 * The {{{drm.debug=0x04}}} kernel option can be used to get additional debugging data included in your {{{dmesg}}} output.

For hard bugs the analysis phase is the most important, and most challenging part of bug work. Depending on how the bug is behaving, there are multiple directions to investigate the issue. Here's some different approaches:

Common Problems

General Issues

Display Issues

Input Issues

Troubleshooting Techniques

Booting

Crashes and Freezes

Other Techniques


CategoryDebugging

X/Troubleshooting (last edited 2017-11-18 18:25:00 by penalvch)