Switch back to integrated graphics

Issues related to hardware problems
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gaben
Posts: 2
Joined: 2021/04/21 14:44:36

Switch back to integrated graphics

Post by gaben » 2021/04/21 14:52:55

Dear Community,

I had a PC with integrated intel card and dedicated nvidia GPU. I need to install centos with a specific way, regarding no home partition every space should to be on \
Now if I using the integrated graphics I can use only character based centos installation, where you can not modify the installation path and file system structure, so I used the dedicated graphics for installation.
After the installation (minimal) I need to switch back to use the integrated graphics, because I need to change the driver of dedicated card to cuda driver and can not use to display.
Unfortunately when I try to use the integrated graphics, the display cannot detect any connection (BIOS configuration changed properly).
Is there any magic to change to integrated graphics for display after centos installation is finished?

Thanks a lot!
BR,
Gaben

tunk
Posts: 1204
Joined: 2017/02/22 15:08:17

Re: Switch back to integrated graphics

Post by tunk » 2021/04/21 15:30:35

I don't know how to do it, but it may help if you provide the output from this:
lspci -nn | grep -i vga

gaben
Posts: 2
Joined: 2021/04/21 14:44:36

Re: Switch back to integrated graphics

Post by gaben » 2021/04/21 15:36:33

tunk wrote:
2021/04/21 15:30:35
I don't know how to do it, but it may help if you provide the output from this:
lspci -nn | grep -i vga
Hi, there is no lspci command on centos7 minimal install :(

tunk
Posts: 1204
Joined: 2017/02/22 15:08:17

Re: Switch back to integrated graphics

Post by tunk » 2021/04/21 15:46:55

If you have network connection:
yum install pciutils

If you don't, (I think) you need these packages as well
(output from repoquery --requires --resolve pciutils):
bash-0:4.2.46-34.el7.x86_64
hwdata-0:0.252-9.7.el7.x86_64
pciutils-libs-0:3.5.1-3.el7.i686
glibc-0:2.17-317.el7.i686
glibc-0:2.17-322.el7_9.x86_64
kmod-libs-0:20-28.el7.x86_64
pciutils-libs-0:3.5.1-3.el7.x86_64

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jlehtone
Posts: 4523
Joined: 2007/12/11 08:17:33
Location: Finland

Re: Switch back to integrated graphics

Post by jlehtone » 2021/04/21 21:41:26

That repoquery lists: pciutils-libs-0:3.5.1-3.el7.i686 and glibc-0:2.17-317.el7.i686
which are 32-bit binaries. Those one does not need.


You can also:

Code: Select all

cat /proc/bus/pci/devices
but that table is a bit raw.

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TrevorH
Site Admin
Posts: 33191
Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: Switch back to integrated graphics

Post by TrevorH » 2021/04/22 00:20:22

To take a step back: did you try the basic video option off the initial Troubleshooting menu that you see when you first boot the install iso? That ought to allow you to use a GUI install so that you can select the options you want. Also, if that fails, you can edit the kernel command line for the installer by pressing tab (Legacy BIOS mode) or 'e' (UEFI) and you can append the word 'vnc' (no quotes) to the end of the kernel arguments and it will start a vnc server on port 5900 on the ip it gets from DHCP (or you can append ip=, netmask= etc). Then once it boots up you can use a separate machine to connect to the vnc server remotely and use the GUI from that.

You can also do all that and more by using a kickstart file but that's rather more complicated.

You also don't give any details about the hardware involved which is why people are asking for the lspci output. If this is a very new machine with new Intel graphics I'm afraid it's very possible that it's unsupported in CentOS 7 and since it's now in its final phase of maintenance, there won't be any future hardware enhancements added (unless some very big customer that pays lots of $$$ requests it).
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke

rbys670
Posts: 3
Joined: 2021/10/07 10:50:13

Re: Switch back to integrated graphics

Post by rbys670 » 2021/10/17 22:04:30

I probably have the same problem. My laptop is an ASUS TUF A15 with two NVIDIA 1650Ti and INTEL UHD graphics cards.
Dear Trevor, as you wrote above do I need to upgrade to a higher version of the operating system? What can you recommend to take advantage of the opportunities provided by my machine?
This is what lspci and kernel versions look like:
lspci -nn | grep -i vga
00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics [8086:9bc4] (rev 05)
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation TU117M [GeForce GTX 1650 Ti Mobile] [10de:1f95] (rev a1)
uname -r
5.4.152-1.el7.elrepo.x86_64

Sorry for my English

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