[Bug 1448985] Re: llvmpipe i386 crashes when running on qemu64 cpu
[Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448985 Title: llvmpipe i386 crashes when running on qemu64 cpu To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1448985/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448985] Re: llvmpipe i386 crashes when running on qemu64 cpu
Since we no longer produce i386 images, this would be hard to reproduce. I could imagine the issue still exists but nobody is or will care. Essentially a difference of what features are reported via cpuid and what actually is implemented in the cpu emulation. Will close at least the Ubuntu side. ** Changed in: llvm-toolchain-3.6 (Ubuntu) Status: Incomplete => Won't Fix ** Changed in: qemu (Ubuntu) Status: Incomplete => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448985 Title: llvmpipe i386 crashes when running on qemu64 cpu To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1448985/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448985] Re: llvmpipe i386 crashes when running on qemu64 cpu
Looking through old bug tickets... can you still reproduce this issue with the latest upstream version of QEMU? Or could we close this ticket nowadays? ** Changed in: qemu Status: New => Incomplete ** Changed in: llvm-toolchain-3.6 (Ubuntu) Status: New => Incomplete ** Changed in: qemu (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448985 Title: llvmpipe i386 crashes when running on qemu64 cpu To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1448985/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448985] Re: llvmpipe i386 crashes when running on qemu64 cpu
Since a simple work-around exists I think the importance can be lowered. ** Summary changed: - Ubuntu 14.04 LTS, 14.10, 15.04, 15.10 guests do not boot to Unity from QEMU-KVM Ubuntu 14.04 LTS, 14.10, 15.04 hosts + llvmpipe i386 crashes when running on qemu64 cpu ** Description changed: STEPS TO REPRODUCE: 1. Install Ubuntu 14.04.2 LTS or Ubuntu 14.10 or Ubuntu 15.04 with all updates (it is a host system). 2. Download one (or all) isos: * Ubuntu 14.0.4.2 i386 iso (ubuntu-14.04.2-desktop-i386.iso, MD5SUM = a8a14f1f92c1ef35dae4966a2ae1a264). * Ubuntu 14.10 i386 iso (ubuntu-14.10-desktop-i386.iso, MD5SUM = 4a3c4b8421af51c29c84fb6f4b3fe109) * Ubuntu 15.04 i386 iso (ubuntu-15.04-desktop-i386.iso, MD5SUM = 6ea04093b767ad6778aa245d53625612) 3. Boot one (or all) isos with as QEMU-KVM guest with the following commands: * sudo kvm -m 1536 -cdrom ubuntu-*-desktop-i386.iso * sudo kvm -m 1536 -cdrom ubuntu-*-desktop-i386.iso -vga std * sudo kvm -m 1536 -cdrom ubuntu-*-desktop-i386.iso -vga vmware * or from usb-creator-gtk via Test disk button 4. Click on Try Ubuntu EXPECTED RESULTS: ISO is booted to Unity desktop, user can test and use it. ACTUAL RESULTS: In 14.04 and 14.10 guests can see empty purple desktop or purple desktop with two shortcuts (Examples and Install Ubuntu ...). 15.10 guest does not boot or boot to safe graphic mode (it is bug 1437740). + The reason for this is that unity requires gfx acceleration which is + done via llvmpipe on non accelerated gfx chipsets (as VMs use by + default). The error message is hidden away but is: + + LLVM ERROR: Do not know how to split the result of this operator! + + The cause is that KVM VMs by default use the qemu64 cpu model which + seems to be inconsistent in some way between claimed features and actual + results when using those features. A work-around for running i386 isos + is to use a cpu model like core2duo or kvm64. + This bug should be confirmed and fixed. Users may want to run Ubuntu in QEMU/KVM, not just VirtualBox. ** Also affects: llvm-toolchain-3.6 (Ubuntu) Importance: Undecided Status: New ** Changed in: qemu (Ubuntu) Importance: High = Medium -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1448985 Title: llvmpipe i386 crashes when running on qemu64 cpu To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1448985/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1448985] Re: llvmpipe i386 crashes when running on qemu64 cpu
Since a simple work-around exists I think the importance can be lowered. ** Summary changed: - Ubuntu 14.04 LTS, 14.10, 15.04, 15.10 guests do not boot to Unity from QEMU-KVM Ubuntu 14.04 LTS, 14.10, 15.04 hosts + llvmpipe i386 crashes when running on qemu64 cpu ** Description changed: STEPS TO REPRODUCE: 1. Install Ubuntu 14.04.2 LTS or Ubuntu 14.10 or Ubuntu 15.04 with all updates (it is a host system). 2. Download one (or all) isos: * Ubuntu 14.0.4.2 i386 iso (ubuntu-14.04.2-desktop-i386.iso, MD5SUM = a8a14f1f92c1ef35dae4966a2ae1a264). * Ubuntu 14.10 i386 iso (ubuntu-14.10-desktop-i386.iso, MD5SUM = 4a3c4b8421af51c29c84fb6f4b3fe109) * Ubuntu 15.04 i386 iso (ubuntu-15.04-desktop-i386.iso, MD5SUM = 6ea04093b767ad6778aa245d53625612) 3. Boot one (or all) isos with as QEMU-KVM guest with the following commands: * sudo kvm -m 1536 -cdrom ubuntu-*-desktop-i386.iso * sudo kvm -m 1536 -cdrom ubuntu-*-desktop-i386.iso -vga std * sudo kvm -m 1536 -cdrom ubuntu-*-desktop-i386.iso -vga vmware * or from usb-creator-gtk via Test disk button 4. Click on Try Ubuntu EXPECTED RESULTS: ISO is booted to Unity desktop, user can test and use it. ACTUAL RESULTS: In 14.04 and 14.10 guests can see empty purple desktop or purple desktop with two shortcuts (Examples and Install Ubuntu ...). 15.10 guest does not boot or boot to safe graphic mode (it is bug 1437740). + The reason for this is that unity requires gfx acceleration which is + done via llvmpipe on non accelerated gfx chipsets (as VMs use by + default). The error message is hidden away but is: + + LLVM ERROR: Do not know how to split the result of this operator! + + The cause is that KVM VMs by default use the qemu64 cpu model which + seems to be inconsistent in some way between claimed features and actual + results when using those features. A work-around for running i386 isos + is to use a cpu model like core2duo or kvm64. + This bug should be confirmed and fixed. Users may want to run Ubuntu in QEMU/KVM, not just VirtualBox. ** Also affects: llvm-toolchain-3.6 (Ubuntu) Importance: Undecided Status: New ** Changed in: qemu (Ubuntu) Importance: High = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448985 Title: llvmpipe i386 crashes when running on qemu64 cpu To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1448985/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1448985] Re: llvmpipe i386 crashes when running on qemu64 cpu
This bug has been reported on the Ubuntu ISO testing tracker. A list of all reports related to this bug can be found here: http://iso.qa.ubuntu.com/qatracker/reports/bugs/1448985 ** Tags added: iso-testing -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1448985 Title: llvmpipe i386 crashes when running on qemu64 cpu To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1448985/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1448985] Re: llvmpipe i386 crashes when running on qemu64 cpu
This bug has been reported on the Ubuntu ISO testing tracker. A list of all reports related to this bug can be found here: http://iso.qa.ubuntu.com/qatracker/reports/bugs/1448985 ** Tags added: iso-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448985 Title: llvmpipe i386 crashes when running on qemu64 cpu To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1448985/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
