Il 06/04/20 15:21, Simon Matter via CentOS ha scritto: >> Il 06/04/20 11:54, Georgios ha scritto: >>> Hi there! >>> I had a similar problem recently with grub. No idea why it doesnt work. >>> Try using grubby instead of grub2-mkconfig if you want the system to >>> keep your kernel parameters between boots. >>> >>> Something like: >>> >>> sudo grubby --args="i915.modeset=0 rd.driver.blacklist=i915" --update- >>> kernel=ALL >>> >>> >>> Hope it helps! >>> Have a nice day! >>> >>> >>> On Mon, 2020-04-06 at 11:42 +0200, Alessandro Baggi wrote: >>>> Hi list, >>>> >>>> I reinstalled on my workstation CentOS 8.1. >>>> >>>> I explain: I'm a KDE user but packages shipped from EPEL currently >>>> are >>>> buggy so I prefer a stable and functioning system to work with. So I >>>> tried to remove KDE workgroup and installed group "Workstation" but >>>> the >>>> system bricked so I reinstalled with GNOME. >>>> >>>> I've an nvidia gtx 1050ti GPU so I installed kmod-driver from >>>> rpmfusion. >>>> After the installation of Nvidia driver, I rebooted, gdm start and >>>> after >>>> I perform the login the system freeze. So this problem happened to >>>> me >>>> with C7.5 and nvidia driver. In my case I need to blacklist i915 >>>> module >>>> and system works. >>>> >>>> Also in this case I tried to boot centos changing grub kernel >>>> parameters >>>> pressing 'e' in the grub menu and adding "i915.modeset=0 >>>> rd.driver.blacklist=i915", booted and system works. >>>> >>>> So I tried to make this permanent updating grub configuration adding >>>> the >>>> previous directives (and removed rhgb and quiet) to >>>> /etc/default/grub >>>> and run grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg. >>>> >>>> Reboot the system and checked again kernel parameters on grub menu >>>> and >>>> seen that nothing changed. Booted and freezed. >>>> >>>> I checked /boot/efi/EFI/centos/grub.cfg and kernelops has the new >>>> directives. >>>> >>>> Seems that grub configuration does not take effect. >>>> >>>> I made another test inside a VM installed with minimal selection and >>>> remove rhgb and quiet parameters and worked fine. The vm is BIOS and >>>> my >>>> workstation UEFI. >>>> >>>> How I can solve this problem? Currently to boot my system I need >>>> always >>>> to add this params. >>>> >>>> Thank you in advance >>>> >>>> _______________________________________________ >>>> CentOS mailing list >>>> CentOS at centos.org >>>> https://lists.centos.org/mailman/listinfo/centos >>> _______________________________________________ >>> CentOS mailing list >>> CentOS at centos.org >>> https://lists.centos.org/mailman/listinfo/centos >> Hi, >> >> I tried as suggested, parameters will be updated but I get already >> crash. So I tried to remove also rhgb and quiet and works well. >> >> Would be good to know what is wrong with grub2-mkconfig. >> >> Where start to investigate? > Just to be sure, your subject line says this is on CentOS 8.1, right? > > Because IIRC grub2-mkconfig was broken in CentOS 7 despite the head of > every grub cfg file telling us "It is automatically generated by > grub2-mkconfig using templates". > > Really weird that you see the same with CentOS 8.1. > > Regards, > Simon > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos Hi Simon, I'm on 8.1. I'm searching help to see if this is a bug or error by me but can't find nothing. Currently I used grubby but it does not write any file that I know like /boot/efi/EFI/centos/grub.cfg (I tried to remove and add arg but nothing changed on files), so I don't know where it make update. I never got a problem using grub2-mkconfig -o file on C7 (last used was 7.5) It always worked as expected to me (for example when I installed nvidia driver using NVIDIA package to blacklist nouveau manually).