Ok...
We can try some other parameters.
acpi_backlight=native This will default to the native driver to see if that works...
acpi_backlight=none This makes the graphics driver manager the backlight.
I suggest that the Suspend - Hibernate and associated Swap issue be run in a new thread.
can you check this once: [SOLVED] acpi_backlight=vendor not working after update. / Laptop Issues / Arch Linux Forums . There seems to be a solution but I don't understand.
There seem to be several solutions offered, actually. Some users suggest the parameters that worked for them even as others say that for their machine, that parameter did not work.
There are a few comments that relate to adjusting the Grub Configuration file directly rather than using a grub parameter - I do not recommend this, in part because the method we are using is simpler and has the same effect.
That is also an old thread. They are referencing changes in the 3.13 and 3.17 Linux Kernels. Here on Zorin OS 16.3, we are currently on the 5.15.0-86
"acpi_backlight=native" did not work
I listed two options above:
I don't have a dedicated GPU. In that case it won't work right?
I do not understand your question as asked. Can you please clarify?
I don't have a graphics card card in my laptop. That means I won't have a graphics driver right?
If I assume your meaning; are you suggesting that the use of nomodeset parameter is only for use with systems that have integrated and dedicated graphics?
If this is your meaning; I do not blame you for reaching this conclusion. I also held that conclusion when I joined the GNuLinux community because it certainly seems to fit the statements made around the web.
However, the parameter handles modesetting, which is not specific to only Graphics Drivers.
To add an example, in the Software & Updates app using Jockey for Additional Drivers tab, it really appears that Additional Drivers only handles Graphics drivers to a large number of users because that is all they ever see there.
But Additional Drivers can and will handle some Wifi Cards and other hardware. They are just less common than Graphics because they less commonly use Proprietary drivers. Whereas Nvidia is very commonly used in machines and will show up frequently in Additional Drivers.
I hope this provides some clarity and insight.
I tried "acpi_backlight=none" as well. Still not working.
Vimal, this is a frustrating problem.
I am sorry for all this trial and error. Let's test something else. Since nomodeset solves the original problem but creates new ones, maybe we can find a different parameter than nomodeset that might help but doesn't create the problem with backlighting and Suspend.
Can you try the following:
iommu=pt i915.enable_psr=0
It will look like
GRUB_CMDLINE_LINUX_DEFAULT="splash quiet iommu=pt i915.enable_psr=0 loglevel=3"
The iommu set to passthrough may not be necessary, I included in order to cover all the bases. You can test it without iommu=pt if you feel inclined.
Tried it. Didn't work.
i915.modeset=1
Let's try if modesetting only during init works...
Is this right?
GRUB_CMDLINE_LINUX_DEFAULT="splash quiet iommu=pt i915.modeset=1 loglevel=3"
Yep.
Sorry if I was unclear. My reasoning at that moment was that I might annoy you by giving reminders on something we have gotten a lot of practice on.
Didn't work bro
Has this issue always been present or did it begin after a kernel upgrade?
My reasoning is, I wonder if it is the i915 driver - and we need to revert to
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash loglevel=3" and try changing your kernel version.
Another option is - the original issue was just some displayed ACPI errors which are not harmful and can be ignored. Could try
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
and not paying the flash of acpi errors any attention.
This issue was present from when I installed linux. Yes it is some ACPI errors. I don't want any fixes for it though. Just want to hide it.
Yes, hiding it was with using loglevel=3
Sadly, this then revealed that you have a Graphics Glitch that we tried to fix - which led to a spiral of other issues. Presumably, on the desktop, you have had no other graphical glitches?
I don't have a desktop