[Bug 155141] New: [KMS] Artifacts with OpenSource Radeon driver

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=155141

            Bug ID: 155141
           Summary: [KMS] Artifacts with OpenSource Radeon driver
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.7
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: tinctura.ginseng at gmail.com
        Regression: No

OS: Arch Linux
Hardware: Notebook ASUS F8Vr, CPU Intel Core 2 Duo P8400 2.26GHz, 4 GB RAM,
Mobility Radeon HD 3470 (RV620)

After update kernel from 4.6.4 to 4.7 I found artifacts when KMS activated -
blue dots drop down in console and graphics mode. Downgrade to 4.6.4 - not
found any artifacts. Upgrade to 4.7.1 and 4.7.2 - artifacts is found. When I
disable KMS with 'nomodeset' kernel parameter the artifacts disappear.

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