# Generic troubleshooting ### {% hint style="info" %} I am bad at writing troubleshooting guide, so feel free to change this page at anytime. {% endhint %} ### Device rebooted to fastboot after several reboots Try re-flashing `boot.img` image to solve this problem. ```bash fastboot flash boot /path/to/boot.img ``` ### Device booted with graphical glitches Sometimes, your tablet can run into graphical glitch. This is because the GPU driver didn't load properly, a force reboot can solve this problem. This situation can also take place when tablet is woke up from suspend mode when the "Close lid to suspend" feature was added in kernel 6.1 . The solution is simple: Press power button (or close the cover on your case, ) to suspend, then press power button again (or open the cover ) to unlock your tablet. ### Kernel panic: unable to mount rootfs at unknown x,y(x and y are some random numbers) In vary rare times, this error will happen when your Ubuntu partition is erased by accident. Or you may have a faulty kernel build. This error will also take place when you flashed at least two `boot` images in different partitions. ### Black screen after kernel logs This means you didn't flash the rootfs image properly. Follow the [installation guide](/linux-for-mi-pad-5/installation-guide/install-ubuntu-on-your-tablet-legacy-images-only.md) to flash it. If you don't have it, you can download it now. ### No console output when using UEFI to boot kernel This can be happened with either GRUB issues, faulty kernel, Kconfig file missing, or an incorrect device tree is used. If you successfully installed GRUB, and got the proper Kconfig (kernel configuration ) file and kernel, you probably used a incorrect device tree. Ensure you can use UEFI boot at anytime, you should get the device tree file from [original kernel repository](https://github.com/inofficial-linux-on-nabu/linux-kernel-6.1.10). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://linux-on-nabu.gitbook.io/linux-for-mi-pad-5/troubleshooting/generic-troubleshooting.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.