This is most likely a hotkey issue which might be further debugged looking atdebugging hotkeys. Backlight control does not work, but there are entries in/sys/class/backlight. This may require the ACPI backlight driver to not take control so that a vendor specific driver will have a chanc...
Kernel debugging using QEMU/KVM instancesStep #1: create a memory dump of the VMlibvirt: virsh dumpIf the VM is running in a libvirt environment we can use "virsh dump" to generate a memory dump: $ virsh dump --memory-only bionic_amd64 /tmp/vmcore.img Domain bionic_amd64 dumped to...
But now when we enable kernel debugging over the NIC, let’s see how the diagram changes. In the second diagram, the debug transport has taken over the NIC hardware completely! The miniport driver, NDIS, and even the kernel itself are excluded from talking to the NIC hardware. That’s ...
But now when we enable kernel debugging over the NIC, let’s see how the diagram changes. In the second diagram, the debug transport has taken over the NIC hardware completely! The miniport driver, NDIS, and even the kernel itself are excluded from talking to the NIC hardware. That’s ...
The MiniDumpWriteDump API is exciting. With a single call, you can create your own dump files. These are the very same files that you'd get from a Dr. Watson crash or from the UserDump tool. These dump files can be loaded into WinDBG or Visual Studio .NET for post-mortem debugging....
This topic describes how to set up 2PF debugging using the kdnet.exe utility. Network card vendors are encouraged to enable support for this feature. For more information, seeDebugger 2PF KDNET Miniport Network Driver Support. Two drivers will run over the partitioned PCI configuration spa...
(-: Debugging Broken Pipes On Unix-y systems, writing to a pipe whose read side is closed will raise a SIGPIPE signal. The default disposition of that signal is to terminate your process [1]. Broken pipe terminations are tricky to debug on Apple systems because the termination doesn’t ...
This week, we'll pick up where we left off last week and continue discussing simple kernel and module debugging using seq_file-based proc files. And given the amount of material left to cover, we'll spend this week finishing off the issues related to the simpler,non-sequenc...
By default, the build compiles without debugging information. This also enables various debug log messages in the kernel modules. These variables can be set on the make command line. E.g., make modules -j$(nproc) NV_VERBOSE=1 Supported Toolchains Any reasonably modern version of GCC or ...
Some of this are pretty straight forward to identify, Others not that easy, especially if you have a process with many threads. When I have to troubleshoot blocking on WaitHandles (e.g Mutex) I usually find the need to use both user mode and kernel mode debugging to identify the guilty ...