Skip to main content

HP, Linux and ACPI

 Majority of HP hardware running on Linux and even Microsoft reported an issue related to a non-standard compliant ACPI. Notable message below repeats at least three times on the boot:


4.876549] ACPI BIOS Error (bug): AE_AML_BUFFER_LIMIT, Field [D128] at bit offset/length 128/1024 exceeds size of target Buffer (160 bits) (20190215/dsopcode-198) 
[ 4.876555] ACPI Error: Aborting method \HWMC due to previous error (AE_AML_BUFFER_LIMIT) (20190215/psparse-529) 
[ 4.876562] ACPI Error: Aborting method \_SB.WMID.WMAA due to previous error (AE_AML_BUFFER_LIMIT) (20190215/psparse-529)


The bug is a known for years from which Linux kernel team are unable to fix without the help of vendor i.e. HP. Here is a compilation of reports:
 The good news is some errors seems harmless. Unfortunately, such errors displayed the quirks approach used by vendors to support Microsoft Windows system thus doing bad practice. One of case how such action lead to an issue to even the officially supported operating system on HP hardware.

The ideal will be for HP to provide a BIOS fix for their affected hardware and officially support the Linux ecosystem much like their Printing department. Linux Vendor Firmware Service will be a good start and so far Dell is the leader in that department. American Megatrends Inc, the company developing BIOS/UEFI for HP made the process easier so it is a matter to fully enable the support.
Labels:

Comments

Post a Comment

Popular posts from this blog

Using AMD RX Vega driver OpenCL on Fedora 29

The Raven Ridge APU is very capable processor to handle OpenCL inside some applications like Blender, Darktable and Gimp. Unfortunately, the current implementation from Mesa, clover, stuck to 1.3, is not supported. AMD released their driver 18.40 with OpenCL2.0+ targeting only Red Hat Enterprise Linux/Cent OS 6.10 and 7.5 in addition of Ubuntu LTS. The good new is the former rpm format can be used on Fedora. The graphical part of Raven Ridge is Vega 8, basically a cut-down of Vega56 or Vega64 meaning choosing either driver for RX Vega . The instruction is provided for extracting the rpm files but here is  some requirements for OpenCL: kernel-devel (provided by Fedora repository) amdgpu-dkms dkms libopencl-amdgpu-pro opencl-amdgpu-pro-icd Once done, applications needing OpenCL will automatically detect the driver located on /opt/amdgpu/lib64 . Blender will list as unknown AMD GPU and Darktable will enable it. OpenCL from official AMD driver enabled on Darktable ...
Post a Comment
Read more

GNOME extension Screen Autorotate available

 While waiting for a bug fix affecting majority of 2-in-1 laptops running on GNOME Wayland session, gnome-shell-extension-screen-autorotate is now available in Fedora repository and EPEL 9 . Give a try on your device Possibly this extension will get added on the incoming Fedora Design Suite 39 as default for the owners of convertible laptops.
Post a Comment
Read more

No network on Fedora 9 x86_64 follow up

Following my post related to NetworkManager . I have found out about the workaround. If you have x86_64 system with 4GB support enabled, you should disable it in order to make NetworkManager work. I am not sure if that bug affects other distributions so, possibly the bug may be related to the x86_64 kernel. Let see if my theory can be verified.
9 comments
Read more