I would have to do more testing, but it does not look like the simple framebuffer driver ever got fixed to release the memory resource and so, as soon as we turn on that, we will have the old issue of VMs (using cirrus default gfx) coming up with no graphical console at all. That said, the simple framebuffer did not exist before 3.13. Reading quickly through the report I think you said you used VESA framebuffer before. That is now built into the kernel (so trying to modprobe does fail). Though maybe not. It would help to find out what framebuffer driver actually was used. Probably that info is already in one of the attached dmesg files. I need to have a look if I have more time. Things to play around would be to look at /etc/default/grub and play around with grub not enabling gfx (term == console) or pre-setting the desired resolution.
-- 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/1434581 Title: Console extremely slow with 3.13 and newer kernels for certified servers with Matrox G200er2 or similar Status in linux package in Ubuntu: Confirmed Status in linux source package in Trusty: Confirmed Status in linux source package in Utopic: Confirmed Status in linux source package in Vivid: Confirmed Bug description: When I first came across this issue I thought it was the same as bug #1316035 (https://bugs.launchpad.net/ubuntu/+source/xorg- server/+bug/1316035), but this bug seems to be about X and it is reporting xorg-server as the package with the issue. I've seen a report on the certification program already on this, but it was lacking follow-up and suggested a bug report, question 255332 (https://answers.launchpad.net/ubuntu-certification/+question/255332). I've already asked about this on the forums, and received no replies. I originally encountered this issue due to having a bunch of Dell servers that I was testing with kernel 3.13 on 12.04. The text console is so slow that it is unusable when using vi or doing an operation similar to dpkg -l |grep xorg. Comparing the exact same system with kernel 3.2 or 3.11 loaded and running lsmod, vesafb is listed and performance is excellent. It is not listed on the 3.13 system. The same issue exists on 14.04 with the 3.13 or 3.16 kernel. Attempting to do modprobe vesa or modprobe vesafb returns modprobe: FATAL: Module vesa not found and modprobe: FATAL: Module vesafb not found respectively. Attempting to use uvesafb on this hardware results in a black screen. Attempting to use vga16fb results in good performance, but I am locked to 640x480. I tried to use fbset to force higher resolutions, but it either results in a distorted display or tells me there is not enough memory. I need a 1280x1024 console with performance equal to 12.04 with kernels 3.2-3.11. The server I'm using for testing is a Dell R320. This appears to be regression as I can duplicate it by simply doing a fresh install of 12.04.1 and not having the issue, while doing a fresh install of 12.04.5, 14.04.1, or 14.04.2 results in a very slow console. --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Mar 20 13:17 seq crw-rw---- 1 root audio 116, 33 Mar 20 13:17 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.1-0ubuntu3.7 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=3255aa87-ba68-4b74-bdb0-1112aba7d46e InstallationDate: Installed on 2015-03-20 (0 days ago) InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3) IwConfig: Error: [Errno 2] No such file or directory MachineType: Dell Inc. PowerEdge R320 Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic root=UUID=fda4445f-efe2-4e93-9adb-ecaf6386f8cd ro consoleblank=0 ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15 RelatedPackageVersions: linux-restricted-modules-3.13.0-46-generic N/A linux-backports-modules-3.13.0-46-generic N/A linux-firmware 1.127.11 RfKill: Error: [Errno 2] No such file or directory Tags: trusty Uname: Linux 3.13.0-46-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: root _MarkForUpload: True dmi.bios.date: 09/23/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.0.21 dmi.board.name: 0R5KP9 dmi.board.vendor: Dell Inc. dmi.board.version: A09 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.0.21:bd09/23/2013:svnDellInc.:pnPowerEdgeR320:pvr:rvnDellInc.:rn0R5KP9:rvrA09:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge R320 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1434581/+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