Troubleshooting
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| * [[X/Bugs]] - Analysis of collection of similar bugs * [[X/Bugs/Transitions]] - Explanation for "installing xserver-xorg-core would break existing software" * [[X/i8xxUnsupported]] - Explanation of why i845, i855, i865, etc. chips aren't supported * [[X/HybridGraphics]] - How to make the most of your system with hybrid graphics * [[X/CommonErrors]] * [[X/ErrorMessages]] * [[Bugs/AtiDriver]] * [[X/Troubleshooting/Resolution|Resolution issues]] |
General Issues * [[X/Glossary]] - Common error messages and terminology |
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| * [[DebuggingKernelSuspend|Suspend and Resume issues]] * [[X/Troubleshooting/XServerCrashOnResume|xserver crash on resume]] * [[X/Troubleshooting/XError|Program received an X Window System error]] * [[X/Bugs/Transitions|X Transitions]] - Explanation for "installing xserver-xorg-core would break existing software" * [[X/Troubleshooting/Other|Other common issues...]] Display Issues * [[X/Troubleshooting/VideoDriverDetection|Video driver detection]] * [[X/MonitorDetection|Monitor detection]] * [[X/Troubleshooting/Resolution|Resolution detection]] * [[X/Troubleshooting/Freeze|Freeze issues]] * [[Kernel/Debugging/Backlight|Backlight issues]] |
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| * [[X/Troubleshooting/Freeze|Freeze issues]] * [[X/Troubleshooting/SingleColorScreen|Single color (brown/blue/etc.) screen on startup]] |
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| * [[X/Troubleshooting/XServerCrashOnResume|xserver crash on resume]] * [[X/Troubleshooting/OnlyLoadsVesa|Only loads vesa instead of correct driver]] |
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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 Input Issues |
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| * [[X/Troubleshooting/XError|Program received an X Window System error]] * [[X/Troubleshooting/NvidiaDriverMissingKernelDriver]] * [[X/MonitorDetection|Monitor Detection problems]] * [[X/Troubleshooting/Other|Other common issues...]] |
* [[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
X/Glossary - Common error messages and terminology
X Transitions - Explanation for "installing xserver-xorg-core would break existing software"
Display Issues
i855 is Unsupported - Explanation of why i845, i855, i865, etc. chips aren't supported
Hybrid Graphics is Unsupported - Not officially supported, but the community has workarounds
Input Issues
Troubleshooting Techniques
Booting
Non-Graphical Booting - Running X manually, without gdm
Wireless Without X - How to get a wireless network connection without X.
Direct Wired Without WAP - How to connect two laptops with direct ethernet cord.
Crashes and Freezes
X Backtracing - How to collect a backtrace for an X crash
X Crash Fixing - How to fix X crashes
Interpreting GPU Dumps - Ringbuffers, batchbuffers, and the meaning of intel_gpu_dump output
Valgrind - Debugging memory leaks
Other Techniques
X Bisecting - Using bisection techniques to solve regressions or backport fixes
X/Testing/Touch - Touchscreen and multi-touch testing
X Quirks - Fixes for some common hardware-specific issues
X/Troubleshooting (last edited 2017-11-18 18:25:00 by penalvch)