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Ubuntu booting problem , i can only boot ubuntu from recovery mode i meant i can only boot from advanced options from grub

lc flag

enter image description hereI have only ubuntu in my laptop.i can only boot from recovery mode If i try normal boot, system will stand still when it gets to laptop logo. I tried lot of forums and i saw same problem for lot of other people they are all saying it is the nvidia problem anyway the solutions are not working for me, my graffics is not nvidia.My graffics is Mesa Intel® HD Graphics 620 (KBL GT2), & when put on recovery mode it is llvmpipe (LLVM 12.0.0, 256 bits). Is there any way to solve this problem?

enter image description here

Teddy avatar
lc flag
Ubuntu 20.04.2 LTS this is my ubuntu version. I reinstalled two times to solve same problem . When install second time problem solved But after one boot its back to same probelm.I am installing ubuntu dvd.I downloaded ubuntu from website and burn to the DVD.And dvd is bootable.5.11.0-25-generic this is my kernal version .
guiverc avatar
cn flag
If you installed Ubuntu 20.04.2 LTS Desktop, you'll have the HWE kernel enabled, and your installation kernel will be 5.8 on boot & install; but being HWE it will upgrade to 5.11 once upgrades are performed. If you select an older kernel at boot (ie. at `grub` selecting a 5.8 on boot) does it boot & work correctly? One option maybe to switch to the GA kernel (ie. *stable* option which will remain on 5.4 for the life of your being on 20.04), see https://wiki.ubuntu.com/Kernel/LTSEnablementStack If you wait you'll hopefully get other suggestions
Teddy avatar
lc flag
Dear gulveric, i dont know how to select kernel during boot.how can i swicth ga kernel
guiverc avatar
cn flag
After POST (your machine's power-on & self-test) you have a brief window where you can press <ESC> to make the `grub` menu appear. On some boxes it appears always; in the "*Advanced options for Ubuntu*" menu I'd hope you have other kernel options (ie. a 5.8 choice; an older HWE kernel) where I'm suggesting that. It'll be the kernel the *live* media (your installation media) used (note: installation media can also use other kernels than I guess; choosing to install OEM kernel choices, so your results may differ to my *guess*). I hope that will allow you to login & use your system...
guiverc avatar
cn flag
If you can login, use the https://wiki.ubuntu.com/Kernel/LTSEnablementStack#Desktop link I provided in my first comment which has a command to install the GA kernel stack (this link is the same page, but will jump to the section I meant)
Teddy avatar
lc flag
Changing to track GA kernel may result in regressions of performance, hardware support, and certified features. will this affect anything , perofrmmances.
guiverc avatar
cn flag
In my experience nope. If however your machine is brand new (a 2020 or 2021 model machine) the answer is possibly yes. It'll depend on the age of your machine (particularly age of components esp. graphics). The GA kernel came out April-2020 so if your hardware is newer than that, even if slightly before the release date for some components (eg. intel write code for the next release of linux [*kernel*] not the existing releases) you risk issues that maybe not ideal. You can install both GA & HWE kernel & select which you want to boot (ie. don't need to restrict yourself to only one)
Teddy avatar
lc flag
Dear gulveric, i tried it but still have same issue. i cannot boot normally but i can boot from Aadvanced options.
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