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prefer-encrypt=mutual; keydata= xsFNBFThCPYBEACx9hl05pMfpVKVjm8Yrmd2I3sm9Jw7EIGfn1tmncSnzfveN7UcIjYI23Gw DE11Hf70tMZKXhNmQqDqoftEDwLbTuzBdgJXFZmfEwrcQHGiR5CZ4IQ3U7SF0a701lyYtuNs WndEO8CCaWHUYybiEl1yRZhwyzAA1j/izilD7FckOaEsTM1sFVDs74qWsNGIdJXYQ5dz/iV/ 45wgYNprfMTZQXLvbGIjAD6rmvuArjCQ5GINYSZqO16xZNNWMnS2C0ZFnWz0Fl3VTpukzvO0 ndYT1P4t7pTWT59XPHKKp1Xs25SDO49GTH+hCnaaMjaKL43gVBw1dEu6nY9Nk4EblVnaJv+x 34X1WZFQheglUuPwH04IDZwVE/ACLZPir5eF7zSiRxGOo1COJwg42o5ow4Aq3vbHCONhvGPh kmB5cxcfOyeruurDVcDGu876qFon44l1mPmZWEtYAep3ngQ6zzawfnC2y5Tjm0syX2n6VgBB Y+CR+8jtprwPS4szgbXq5Z+VnxMXAikxrG55vY7uZ2id4z1uqwJRTXdkvzfP52POHuX/Etbz IeQJSQWLqdh4IBXR9QoaXVBwJMMhk5+GYAQ+DXPJzglqxxI/1OuWZi2/2NqrpKMIzXOTxT8/ uUx9jMT9TsFvu5XiiKC5oMvUv2JIW6XQB1Ay73c1niqL5MDdAwARAQABzVRKZXJlbXkgQ2xp bmUgKGh0dHBzOi8vZmVkb3JhcHJvamVjdC5vcmcvd2lraS9Vc2VyOkpjbGluZSkgPGpjbGlu ZUBmZWRvcmFwcm9qZWN0Lm9yZz7CwY4EEwEIADgWIQSvPJnHsb8iwP1BXSvGyJ0h8ZTGQgUC WtDsAQIbAwULCQgHAgYVCgkICwIEFgIDAQIeAQIXgAAKCRDGyJ0h8ZTGQuJqD/9zckk1e4Kp 0toGt/pYOVBmdwv/NOJh8w4pFaSq2mdlHkQh0HVnxifWTN0gm9z8ze7cEdj//hElti/wH6lZ E7wFkiwkLBXSZpwQbY/AYQ9a01SJgFE5+7Jk5YI1p3T2V6xgWU5HNUUYcOwxxaJB2ANWep0i KwCvWE0pQFvafVDJaxbAwmL+7/L4Y6YeO5pHCzxv1Vdm54Gy+pKPhEiq/TeqVCx0GrE50stC oAIPa/O8WwYDddNdy75i3DE4kIpgNaGruP5qlHHSKXmLJcRU00njySXxdilKjAWZ66x9hI8+ BfJiyi/WXEb/qmOsh2rVLeRt9tY5xh5vIJTZlqMKLLnC9pJL12KcTd6Me3hKDhKrUighFvFp GRGst7pNPh5j68ZB9sCa9spsIyyspeM3hOBbCQN49DY7LnOMjgXigVqZvBV+3WhFpDkyedmR LaoES6I6iLhtTsuxkxrw8qSqWAbU6Bxm9QeQwikfxhrT415oGABI01da2taI6c96HTp2cGh+ 06TFfcVXuiPPZTf0G2Be+VhE8AU40CGquZBqk1ZDgUAZuZ5H5q9Y6MyRpPwPCW6gV4yUKeXu yyWg0g4ZDCne7uFXNgBSfvmwR9sjb3iYx2Dn4iSWwuQzYk0oNkcIGtMy/NyuBgZwrpiGQIFj fDS4xrtQh9pk0+RbY2HuApeuxM7BTQRU4Qj2ARAApA5cy8aJjeSJQrmnT0g4G/Y3ipaUqY+G s7fEiabuSRjhNilPQbN1KJR7jtSLgu9wzTOAh2MfIShzmLpegWpRCFyZCsLUYWZPe3kPFHZE CdRCA+tCApLE1UswrslCMLwQ2JTV7v6gjv3LUwfw1bSDMNMXJ8MGswbcYUgZpTEASA42yUaW WJgq7olWltlU3MTlR79CmXCRvhQWdsqg4+mdfO6PIuKTy8tx2bzax3jLZ2AV1M7mQi+sJxVn MUZpoUmfj6qMzBWTISGqKFCRMwZAzSEjpY6BvmJ9Vzxbj8M1MCKWlWnZq/ZbhRuoVuXhyFKK mxDU4cclIS+ggHrglibI49M2XSnF9FSCCnlaOd9L+NF7Zx2W1dey7Nq34si7H81opii+ZeO0 au92iIlB8J8t9Ba2dBx0SURWYU/R8g6FyRuDKEO1Y0NpBAwFIjq68tJFyq7reL0HqrxiTI4B 854ZJHpePUnfllWlaEXJ3wJ4UIMSTDNsz/HYuEcch3185sfP1vJ9YRBE7y4N3EEB+dVsfgY/ crsCwMxjukftWfohCLS09rXAkoBQz0luTzHESe3fmMoO5kwbvOJkBOBCEYJz/rqTk24ouc9q PVC6DUX5jmRO+2Ll17O/H1gLpjwVDHi2i2kFSsl88+DThQlJrCGmIwYB6KqvHHNoCotd8Dvb fA8AEQEAAcLBXwQYAQIACQUCVOEI9gIbDAAKCRDGyJ0h8ZTGQi1bD/wMbSCnreanQFYTTgzC 6i/dtsWrd3DvJzaxKdUrSjioP1tK6YLpS7SSc5khYUjVp7xdsu9vCazsLspzBYbQOV02xtI5 CTLwMzh4hYE1/66K899++0v2dP9m9DEKu/R4vqW4axTfWIbR/ygd1bh2a/7NpAT6qiJg8vha Qkf/fVKZ9xM7EDHmfFJscqC6JyYNdYvz8wJ0aa9Z6zvnNUzjAntj62kJV8b8m5diUQDUI8dp r9crk+XxOTNpYid6p8mlNTcX54LTy1eEL7BYG1S3ezcLZC9/78MTdTJbxQMz7/zQXOABfMDy +otLuhEBxi5hl+COIsiRotTOBNPNr1UmV4fQjXz2K6cfgaO/9NilQaEU6zpsMcAOi5lLxlzD GRyPO2a0QQFZ7FmH9dRWw/6mmspQMBNRr5CrQdIBiWDcJGNPl8iX9TqwP62dZgwANT6+FR7K If4axm/gJQMSUCon3eLJhi8b5qZp4vZn7Xj4hCswrO9eExmT9IjpRVcHLYti36m99WRvItDy dVvrvIQi5qah3PrQjtwSJ61ExSZTOpBQGC60yQf+GG0TISIeeXX8CK2e1PIDt7/l+d0onCmU /98IQsNgR/9sifmdPeh3nKsxe2vsa3HNeElQU2ko6ZHMrE0gSyel5vaqRLQQwekBx1mr/7Ll X/87hZ4pdW/aOXUAgQ== Subject: Regression: no display with Vega 56 AMD GPU bisected to commit bfdec2340478 Message-ID: <010001645c459a1a-7702e186-5985-4c02-9983-7205df8e3232-000000@email.amazonses.com> Date: Mon, 2 Jul 2018 18:33:42 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-SES-Outgoing: 2018.07.02-54.240.8.62 Feedback-ID: 1.us-east-1.z18Isoc/FaoPOvCyJyi1mnTt8STwoRuibXVNoUcvG6g=:AmazonSES Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi folks, A Fedora user, Mikhail (CCed), reported[0] a regression with their Vega 56 AMD GPU introduced by bfdec2340478 ("drm/amd/display: Implement dm_pp_get_clock_levels_by_type_with_latency"). The symptom is that nothing is displayed and looking at the logs (attached to the Bugzilla), I see gnome-shell is failing with "Failed to set CRTC mode 3840x2160: Invalid argument". The problem persists through 4.18 RC2 so it's not fixed by 10dd2b865393 ("drm/amd/display: Fix wrong latency assignment for VEGA clock levels"). I see a couple "if (!dm_pp_get_clock_levels_by_type_with_latency)" blocks which would no longer be unconditionally run, but I don't know enough to even guess at the problem. [0] https://bugzilla.redhat.com/show_bug.cgi?id=1592110 Regards, Jeremy