[Kernel-packages] [Bug 1507964] Re: VNC/Spice console is unusably slow
Which Computer? My laptop (the remote desktop device), or one of our hosts that run the VMs which are in Germany? -- 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/1507964 Title: VNC/Spice console is unusably slow Status in linux package in Ubuntu: Incomplete Bug description: As requested by Christopher M. Penalver I am reporting a new bug. This is basically the same as the bug 582145. Using virt-manager to manage our remote KVM virtual machines (Mostly these are running Ubuntu server 14.04) is unusably slow. The screen takes ages to redraw and makes entering commands tedious. I have tried many different permutations of Display and Video parameters with no noticeable difference. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-30-generic 3.19.0-30.34 ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6 Uname: Linux 3.19.0-30-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: alord 2189 F pulseaudio CurrentDesktop: GNOME-Flashback:Unity Date: Tue Oct 20 10:42:43 2015 HibernationDevice: RESUME=UUID=7f94c8b0-6210-45e4-a151-c5d26be6cd81 InstallationDate: Installed on 2013-11-15 (703 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: SAMSUNG ELECTRONICS CO., LTD. R530/R730 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=2ac45dbd-f074-4204-86b9-0e133f25af94 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-30-generic N/A linux-backports-modules-3.19.0-30-generic N/A linux-firmware 1.143.3 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-04-27 (176 days ago) dmi.bios.date: 03/12/2010 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 03JV.M011.20100312.hkk dmi.board.asset.tag: Tag 12345 dmi.board.name: R530/R730 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr03JV.M011.20100312.hkk:bd03/12/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR530/R730:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR530/R730:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: R530/R730 dmi.product.version: Not Applicable dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507964/+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
[Kernel-packages] [Bug 1507964] [NEW] VNC/Spice console is unusably slow
Public bug reported: As requested by Christopher M. Penalver I am reporting a new bug. This is basically the same as the bug 582145. Using virt-manager to manage our remote KVM virtual machines (Mostly these are running Ubuntu server 14.04) is unusably slow. The screen takes ages to redraw and makes entering commands tedious. I have tried many different permutations of Display and Video parameters with no noticeable difference. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-30-generic 3.19.0-30.34 ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6 Uname: Linux 3.19.0-30-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: alord 2189 F pulseaudio CurrentDesktop: GNOME-Flashback:Unity Date: Tue Oct 20 10:42:43 2015 HibernationDevice: RESUME=UUID=7f94c8b0-6210-45e4-a151-c5d26be6cd81 InstallationDate: Installed on 2013-11-15 (703 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: SAMSUNG ELECTRONICS CO., LTD. R530/R730 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=2ac45dbd-f074-4204-86b9-0e133f25af94 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-30-generic N/A linux-backports-modules-3.19.0-30-generic N/A linux-firmware 1.143.3 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-04-27 (176 days ago) dmi.bios.date: 03/12/2010 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 03JV.M011.20100312.hkk dmi.board.asset.tag: Tag 12345 dmi.board.name: R530/R730 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr03JV.M011.20100312.hkk:bd03/12/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR530/R730:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR530/R730:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: R530/R730 dmi.product.version: Not Applicable dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug vivid -- 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/1507964 Title: VNC/Spice console is unusably slow Status in linux package in Ubuntu: New Bug description: As requested by Christopher M. Penalver I am reporting a new bug. This is basically the same as the bug 582145. Using virt-manager to manage our remote KVM virtual machines (Mostly these are running Ubuntu server 14.04) is unusably slow. The screen takes ages to redraw and makes entering commands tedious. I have tried many different permutations of Display and Video parameters with no noticeable difference. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-30-generic 3.19.0-30.34 ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6 Uname: Linux 3.19.0-30-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: alord 2189 F pulseaudio CurrentDesktop: GNOME-Flashback:Unity Date: Tue Oct 20 10:42:43 2015 HibernationDevice: RESUME=UUID=7f94c8b0-6210-45e4-a151-c5d26be6cd81 InstallationDate: Installed on 2013-11-15 (703 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: SAMSUNG ELECTRONICS CO., LTD. R530/R730 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=2ac45dbd-f074-4204-86b9-0e133f25af94 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-30-generic N/A linux-backports-modules-3.19.0-30-generic N/A linux-firmware 1.143.3 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-04-27 (176 days ago) dmi.bios.date: 03/12/2010 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 03JV.M011.20100312.hkk dmi.board.asset.tag: Tag 12345 dmi.board.name: R530/R730 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr03JV.M011.20100312.hkk:bd03/12/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR530/R730:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR530/R730:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: R530/R730 dmi.product.version: Not Applicable dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage noti
[Kernel-packages] [Bug 582145] Re: Virtual guests' console is unusably slow due to framebuffer usage
Still a big issue. We run a 14.04 Host on the bare-metal, with 14.04 guests. From my remote Ubuntu 15.04 desktop the virt-manager windows are pretty useless. Have tried various combinations of spice and VNC and graphics options in the virt-manager guest configuration but it seems to make little or no difference. -- 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/582145 Title: Virtual guests' console is unusably slow due to framebuffer usage Status in linux package in Ubuntu: Expired Bug description: This was also discussed in https://lists.ubuntu.com/archives/ubuntu- server/2010-May/004172.html The problem is that the console of a Ubuntu 10.04 (server) virtual machine/guest becomes incredibly slow and really unusable as soon as it starts scrolling. This is apparently due to the kernel switching on the console framebuffer which does not play well with the VNC-based console viewers of virt-manager. I have created a screencast to demonstrate, please find it here: https://daff.pseudoterminal.org/misc /console-slow.ogg I have experienced this using KVM and virt-manager/virt-viewer on Ubuntu 10.04 and Ubuntu 9.10 hosts (using the server edition, FWIW). Apparently it also happens with VirtualBox but I have not tested this myself. The only solution for the time being seems to be to blacklist the vga16fb module as suggested by Paul Nuffer: $ echo "blacklist vga16fb" | sudo tee -a /etc/modprobe.d/blacklist Merely adding "nomodeset" to the kernel boot options is not sufficient. I don't even know exactly to which package this bug belongs let alone what to do about it except force the kernel not to use a console framebuffer. I know Plymouth needs the framebuffer to display splash screens and whatnot but there should be a proper way to disable it when running as a virtual machine. And since the splash screen is disabled anyway when creating a server virtual machine there is really no use in a framebuffer, especially if it slows everything down to a crawl. So what to do? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/582145/+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
