** Description changed: + The real reason that this only happens with newer kernels is that before: + commit 61e57a8d72f2336faf39b5d940215cf085e01e6e + Author: Adam Jackson <ajax <at> redhat.com> + Date: Mon Mar 29 21:43:18 2010 +0000 + drm/edid: Fix secondary block fetch. + which reached mainline in 2.6.35, only the base block of the EDID was read. Now the extension blocks are also being read. If any of the extension blocks are invalid then the whole EDID is thrown away. + + the new patch only throws away the bad extension. + + there is an upstream bug at + https://bugs.freedesktop.org/show_bug.cgi?id=31154 + + == second description == + The kernel has become fussy about EDID information from the monitor. When using kernel mode setting (KMS) the kernel will refuse to setup a monitor with invalid EDID (even if those which worked with previous kernels). Radeon still has user mode setting, which seems to bypass the EDID strictness. so to boot one can append the following to the grub kernel line: radeon.modeset=0 == original description == i install maverick with todays live cd. after install there was a lot of updates available (including xorg and kernel). after these updates i can't boot. i get a stuck at a blank screen after grub. i can't switch VT. same happens even with recovery mode. if i select the old kernel 2.6.34-5.14 at grub i can boot fine. i tried to use "ubuntu-bug linux" to report the issue, but i says "This is not a genuine Ubuntu package" i guess this is because i am booted with an old kernel. so please let me know what info you might need. i'll attach syslog, because that defiantly has some interesting messages. there is a failed boot starting at Jul 3 14:32:00 --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. AplayDevices: aplay: device_list:235: no soundcards found... Architecture: amd64 ArecordDevices: arecord: device_list:235: no soundcards found... AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 10.10 HibernationDevice: RESUME=UUID=39a09ba5-66d6-431f-94fc-b6b8c5550a28 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100605) Package: linux (not installed) ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-7-generic root=UUID=46ef5009-4985-4715-9265-5851f8956be8 ro quiet splash ProcEnviron: LANG=en_GB.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.35-7.12-generic 2.6.35-rc4 Regression: Yes RelatedPackageVersions: linux-firmware 1.37 Reproducible: Yes RfKill: Tags: maverick graphics regression-potential needs-upstream-testing Uname: Linux 2.6.35-7-generic x86_64 UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 11/07/2007 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: 6.00 dmi.board.name: S2696 dmi.board.vendor: Tyan Computer Corporation dmi.chassis.type: 6 dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd11/07/2007:svn:pn:pvr:rvnTyanComputerCorporation:rnS2696:rvr:cvn:ct6:cvr:
** Bug watch added: freedesktop.org Bugzilla #31154 http://bugs.freedesktop.org/show_bug.cgi?id=31154 ** Also affects: linux via http://bugs.freedesktop.org/show_bug.cgi?id=31154 Importance: Unknown Status: Unknown -- 2.6.35-6.9 (and newer) kernels having issues with invalid EDID info and ATI Radeon graphics https://bugs.launchpad.net/bugs/601376 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
