They've found the bug!! https://bugs.freedesktop.org/attachment.cgi?id=142443
Is there a mechanism for getting this patched into the current Cosmic kernels (and, presumably, Disco)? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1800752 Title: [regression] Wrong EU count for i5-5250U, reducing OpenCL performance Status in beignet package in Ubuntu: Invalid Status in linux package in Ubuntu: Confirmed Bug description: I run a BOINC project which uses opencl_intel on my Kubunut system On bioinc the tasks ran in 12,000 +/- 200 seconds. They've been doing that for ~6 months. I've now updated the system to cosmic, and the task are not taking 19,000 +/- 200s. I have another system (which is still running Mint18.3 - and hasn't changed) which also runs these tasks and the timings there have not changed, so the tasks themselves are still equivalent. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: beignet-opencl-icd 1.3.2-4 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 CurrentDesktop: KDE Date: Wed Oct 31 01:17:08 2018 InstallationDate: Installed on 2018-05-09 (174 days ago) InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: beignet UpgradeStatus: Upgraded to cosmic on 2018-10-26 (4 days ago) --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 DistroRelease: Ubuntu 18.10 InstallationDate: Installed on 2018-03-23 (228 days ago) InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180306.1) Package: linux PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Tags: cosmic Uname: Linux 4.18.0-10-generic x86_64 UpgradeStatus: Upgraded to cosmic on 2018-10-28 (9 days ago) UserGroups: _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/beignet/+bug/1800752/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
