PawełG's questions

I used to use this hdparm -Y /dev/sda under KDE to spin down hdd disk but this stopped to work as disk started to spin up by itself, I couldn't find a way to correct this by using other hdparm parameters and afrer a wide research found that still this function offers gnome-disk-utility and work like a charm but...I would like to make disk spun down at startup and found that this gnome-disks app offers really only few options via terminal, it's rather GUI app...anyway if somebody know how this may be done and hdd disk spun down at each system startup I would appreciate this help

Under 390.48 everything worked well in Blender and having duo Intel-nVidia I could work under Intel by prime-select and have nVidia activated in Blender. After update to 396.24 there's no cuda found and even I go back to 390.48 it's still the issue. Even I will switch to nVidia entirely by prime-select nvidia the cuda still isn't detected. I wonder if there may be other areas of ubuntu internal or other apps/dependencies which could break nVidia cuda detection? Any version of Blender checked. No any major ingerentions made in system internally just standard updates coming daily.

have installed nvidia and intel drivers as shown below (intel check):

sudo dmesg | grep microcode
[sudo] hasło użytkownika pawel: 
[    0.000000] microcode: microcode updated early to revision 0x24, date = 2018-01-21
[    0.928970] microcode: sig=0x306c3, pf=0x20, revision=0x24
[    0.929135] microcode: Microcode Update Driver: v2.2.

...on asus laptop but intel isn't available to choose in ubuntu's 'additional drivers' section, only nvidia is available

as for this I can't switch to intel via nvidia prime (login loops in intel mode, so I switch back to nvidia via terminal sudo prime-select nvidia)

any ideas? have reinstalled intel packages but no difference

Is it possible to having installed Windows 10 and Ubuntu reformat 100MB Efi partition and 2MB BIOS boot partition to make everything grub/efi work? Also is it possible to remove or see the content of /dev/sda where is grub installed? I have such situation, have all partitions with installed Windows and Ubuntu + Windows recovery and Windows restore partitions but bios stopped to see the hard drive in bios boot options (It detects the hard drive as hardware with all model info, etc) and only see in boot options DVD and aditional USB if attached.

I have all set on Efi boot partition and have issues with make it work so addidtionally created 2 MB of legacy BIOS boot partition but not sure what should be placed there? Grub2 i386 image? So...there is grub installed on /dev/sda, Efi partition with efi grub and boot/windows/ubuntu efi files and bios boot partition empty...what can I do to try to make the bios see again hard drive filesystem to choose or just boot options based on hard drive? grub.cfg seems to be properly configured

After messing with Efi partition sda1 (100mb fat32 esp boot) with some efi/grub data on it I'm getting some issues with get back my Asus laptop's hard drive to work. If there's no USB attached with live OS it boots straight to bios and in bios the hard drive is detected but no any boot option with OS installed on hard drive (windows 10 and ubuntu). Below photos from my current bios options: 1 2 3 4 5

in HDD option tab there's only USB drive options and the filesystem to choose if I want to add new entry. In Ubuntu live mode by adding new entries via efibootmgr command I get this:

sudo efibootmgr -c -d /dev/sda -p 1 -L "Ubuntu" -l \EFI\ubuntu\shimx64.efi
sudo efibootmgr -c -d /dev/sda -p 1 -L "Windows" -l \EFI\Microsoft\Boot\bootmgfw.efi

and output:

efibootmgr -v
BootCurrent: 0009
Timeout: 1 seconds
BootOrder: 0001,0000,0009,0007,0008
Boot0000* Ubuntu    HD(1,GPT,f874cbe0-f4e9-4972-8fac-6abf2eea49d7,0x800,0x32000)/File(EFIubuntushimx64.efi)
Boot0001* Windows   HD(1,GPT,f874cbe0-f4e9-4972-8fac-6abf2eea49d7,0x800,0x32000)/File(EFIMicrosoftBootbootmgfw.efi)
Boot0007* Hard Drive    BBS(HD,,0x0)..GO..NO........i.M.D.O. .U.S.B. .2...0. .5...0.0....................A.............................6..Gd-.;.A..MQ..L.M.D.O. .U.S.B. .2...0. .5...0.0........BO
Boot0008* CD/DVD Drive  BBS(CDROM,,0x0)..GO..NO........o.H.L.-.D.T.-.S.T. .D.V.D.R.A.M. .G.U.7.1.N....................A...........................>..Gd-.;.A..MQ..L.Z.K.D.B.J.7.2.F.1.7. .3. . . . . . . . ........BO
Boot0009* UEFI: MDO USB 2.0 5.00    PciRoot(0x0)/Pci(0x1d,0x0)/USB(1,0)/USB(1,0)/HD(1,GPT,1ba7e9d7-5953-4ef3-8b09-f83c1fec0ffe,0x800,0x3d37df)..BO
ubuntu@ubuntu:~$

the hard drive is strangely described and attached without any factory info, model, etc....after reboot all these new insertions are gone. Is there any possibility to attach hard drive to be detected by bios also in boot options? or there's need to reinstall Windows 10 or use other commands in Ubuntu live mode? Now I can only run systems from USB or DVD. Please let me know if some options are available as I need equipment to back to work. Any suggestions appreciated :-)

I have laptop with spec as provided in title with i7 processor and Intel Graphics, installed nvidia driver 384.59, Intel graphics driver with Intel Graphics Update Tool, with and without installed nvidia Cuda toolkit

installed Blender 2.28 from Blender PPA and Blender 2.8 from blender.org

Both versions can't see GPU available even I start blender as root with sudo ./blender

I also have no available options in nvidia settings (nvidia X server) which are just empty after nvidia driver installation - it looks like there's no any xorg or nvidia configuration or config files in the system

I installed corresponding nvidia-modprobe 384.59 but after reboot I couldn't login via lightdm, so had to remove this nvidia-modprobe (in ubuntu perositories/ppa there's only one old version of nvidia-modprobe)

How can I enable GPU in Blender in Ubuntu??? My nvidia 740m is correct as I have it working under same version of blender in Windows 10

I run out of ideas...