https://bugzilla.kernel.org/show_bug.cgi?id=80321
Bug ID: 80321
Summary: Lenovo W530: Freeze on boot with CSM enabled
Product: ACPI
Version: 2.5
Kernel Version: >3.13
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: BIOS
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 143171
--> https://bugzilla.kernel.org/attachment.cgi?id=143171&action=edit
lspci without CSM
Booting a Linux distribution on the Thinkpad W530 via UEFI - Compatibility
Support Module (CSM) turned off - works fine, but booting UEFI with CSM on, or
booting in BIOS mode, which requires the CSM to be on, freezes the Device.
Guessing from the systemd messages up to this point, freezing occurs right
after udev is started.
I have tried different kernels with Arch Linux, and a Fedora 20 live image.
Unfortunately, the freeze always happens before logs are written to disk.
Steps to reproduce:
1. Enable CSM on a Thinkpad W530
2. Boot anything with a kernel newer than 3.13
3. Start udev hardware detection
You can boot the system with noacpi or noapic as kernel options, though this
will heavily limit the functionality of the system.
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