On Thu, Aug 10, 2023 at 3:12 AM Polarian <polarian@xxxxxxxxxxxx> wrote: > > Hello, > > So the ArchWiki can be very confusing about this all, and I am sure a > lot of people will just install every package and will just hope that it > does something, but I would like to actually understand it, so sorry for > the ML noise, I would like some clarifications from those who are > knowledgeable about this topic. > > So reason I got a new Laptop with alder lake, and I am trying my best to > optimise it, I dropped 70% battery in just 2 hours when its a 73wh > battery, that is absurd, so I checked the two following which is > recommended to improve performance and battery life: > > 1. 3D acceleration is in use > 2. Hardware video acceleration is in use > > As for 1, it was by default, however the ArchWiki on the xorg page > (https://wiki.archlinux.org/title/Xorg#Driver_installation) lists the > following driver to be installed for xorg: > > xf86-video-intel > Actually, xf86-video-intel is not really recommended for most people: https://wiki.archlinux.org/title/Intel_graphics#Installation Make sure Early KMS is enabled. https://wiki.archlinux.org/title/Kernel_mode_setting#Early_KMS_start > Now running glxinfo before the installing of said package, direct > rendering is enabled (DRI), which would indicate that 3D acceleration is > working as needed. > > So I am a little confused on why it works without having the xorg driver > installed? I have the xorg metapackage installed (I am lazy, and the > xorg utilities are useful). > > is xf86-video-intel used to enable DRI3? Is DRI2 possible without said > driver? > > The wiki is really not clear about this, and I know a lot of people > probably wonder why it matters if 3D acceleration is already enabled, > but I would like to know what is going on :) > > Also, saying "Just use wayland" is not a valid answer, already had this > happen before so just putting it out there. > > I would appreciate a detailed explanation on what is going on to clear > the confusion. > > Now back to point 2, this was not enabled, VAAPI is the Intel API for > hardware video acceleration and after installing the required driver > (intel-media-driver) vainfo (from libva-utils) successfully shows > support for Hardware video acceleration. > > If anyone else has any suggestions or experience with optimising alder > lake mobile chips on Arch Linux, I would also appreciate the pointers. > > As a small note, I used AMD (ryzen 5 5500U) with my old laptop, I can > not remember if I could be bothered to setup hardware video acceleration > or going through optimising the integrated graphics, I ran that Arch > Install for 2 years and typical me doesn't document any of my > configuration or dotfiles, so I am trying to piece distant memories back > together, lucky the ArchWiki is a good refresher :P > > Thank you for your time, > -- > Polarian > GPG signature: 0770E5312238C760 > Website: https://polarian.dev > JID/XMPP: polarian@xxxxxxxxxxxx
