[Bug 105962] New: "enable_RC6" parameter deprecation brings back freezing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105962

            Bug ID: 105962
           Summary: "enable_RC6" parameter deprecation brings back
                    freezing
           Product: DRI
           Version: XOrg git
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: tyx027 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Hello,

I noticed that the "enable_rc6" parameter is gone since kernel 4.16 and found
out the reason is that there aren't any bugs related to it anymore.

Unfortunately this is not true. Lenovo's V310 and V510 laptops massively suffer
from random freezing and so far the only fully working solution has been to set
the mentioned parameter to 0. The "enable_dc=0" parameter alone is not enough
as the freezing is back since kernel 4.16. 

Is there any way of a passing an equivalent parameter or any way to turn off
RC6? If not, on behalf of all owners of laptops mentioned above I kindly beg
the developers to consider the non-negligible effect this deprecation will have
on us.

More on these Lenovo laptops freezing:
https://forums.lenovo.com/t5/Lenovo-C-E-K-M-N-and-V-Series/V510-15IKB-Laptop-Freeze/td-p/3577112

Best regards,
Filip

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