Are you good with me using kernel: 5.11.0-37-generic  or would you 
prefer I use a different kernel?
The X555U is currently running Linux Mint 20.2 Cinnamon.

FYI:
I tried removing pci=noaer and it does boot now (without your patch).
It has been a while since I tried removing pci=noaer and new kernels get 
installed all the time so not sure what kernel first started allowing it 
to boot without needing that line.
However, there are still many errors on boot.

dmesg --level=err,warn
[    0.105337] x86/cpu: VMX (outside TXT) disabled by BIOS
[    0.110761] MDS CPU bug present and SMT on, data leak possible. See 
https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for 
more details.
[    0.110761]  #3
[    0.114598] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    0.135583] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PCI0.RP01.PXSX], AE_NOT_FOUND (20201113/psargs-330)
[    0.135597] ACPI Error: Skipping While/If block (20201113/psloop-427)
[    0.527786] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not 
cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f 
flags 0x200] vs fed40080 f80
[    0.527874] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not 
cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f 
flags 0x200] vs fed40080 f80
[    0.736009] i8042: PNP: PS/2 appears to have AUX port disabled, if 
this is incorrect please boot with i8042.nopnp
[    0.738042] platform eisa.0: EISA: Cannot allocate resource for mainboard
[    0.738044] platform eisa.0: Cannot allocate resource for EISA slot 1
[    0.738045] platform eisa.0: Cannot allocate resource for EISA slot 2
[    0.738046] platform eisa.0: Cannot allocate resource for EISA slot 3
[    0.738048] platform eisa.0: Cannot allocate resource for EISA slot 4
[    0.738049] platform eisa.0: Cannot allocate resource for EISA slot 5
[    0.738050] platform eisa.0: Cannot allocate resource for EISA slot 6
[    0.738051] platform eisa.0: Cannot allocate resource for EISA slot 7
[    0.738052] platform eisa.0: Cannot allocate resource for EISA slot 8
[    1.268806] r8169 0000:02:00.0: can't disable ASPM; OS doesn't have 
ASPM control
[    1.329939] i2c_hid i2c-ELAN1000:00: supply vdd not found, using 
dummy regulator
[    1.329973] i2c_hid i2c-ELAN1000:00: supply vddl not found, using 
dummy regulator
[    1.611704] ata1.00: supports DRM functions and may not be fully 
accessible
[    1.613394] ata1.00: supports DRM functions and may not be fully 
accessible
[    5.726419] elan_i2c i2c-ELAN1000:00: supply vcc not found, using 
dummy regulator
[    6.376762] nvidia: loading out-of-tree module taints kernel.
[    6.376775] nvidia: module license 'NVIDIA' taints kernel.
[    6.376776] Disabling lock debugging due to kernel taint

[    6.884240] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 470.63.01  
Tue Aug  3 20:44:16 UTC 2021
[    6.958699] nvidia_uvm: module uses symbols from proprietary module 
nvidia, inheriting taint.
[    8.533945] ACPI Warning: \_SB.PCI0.RP01.PEGP._DSM: Argument #4 type 
mismatch - Found [Buffer], ACPI requires [Package] (20201113/nsarguments-61)

Chris

On 2021-10-03 2:03 a.m., <email address hidden> wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=109691
>
> Naveen Naidu (<email address hidden>) changed:
>
>             What    |Removed                     |Added
> ----------------------------------------------------------------------------
>   Attachment #299043|0                           |1
>          is obsolete|                            |
>
> --- Comment #15 from Naveen Naidu (<email address hidden>) ---
> Created attachment 299071
>    --> https://bugzilla.kernel.org/attachment.cgi?id=299071&action=edit
> Patch for the AER message spew
>
> This is the correct patch. Please use this and ignore the previous patch.
>