I am seeing a similar problem. Linux Mint 18.3 XFCE, Lenovo Thinkpad T60 i686 / ATI Radeon RV515 GPU
After upgrade to kernel 4.15.0-48, I get a black screen and frozen keyboard once the boot splash screen exits, when the login screen should appear. There is no mouse pointer, and I can't escape with ctrl-alt-f1, ctrl-alt-backspace, etc. If I leave the system running for a while, there is occasional disk activity, and syslog entries with later time stamps, indicating that the kernel is still running, but the X server is frozen. Same thing with latest kernel 4.15.0-50. I can boot into the previous kernel 4.15.0-47 with no problems. If I boot into run level 3 (terminal only, no GUI) by editing the Grub kernel command line, the system will boot, but enters the same frozen state if I then start the GUI with 'sudo service lightdm start' (which works fine with the previous 4.15.0-47 kernel). If I add "nomodeset" to the kernel command line, the system will boot into the GUI. In this case Xorg.0.log shows that the X server unloads the Radeon driver (which will not run without KMS) and loads the fallback VESA driver instead. I.e., on my computer the bug affects the Radeon driver but not the VESA driver. (However, this is not a solution for me because the VESA driver doesn't handle my 1400x1050 screen resolution correctly.) One other thing - the bug happens maybe 9 times out of 10 but not every time. On the occasional successful boot, once the GUI comes up without freezing, everything seems to work OK. -- 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/1827884 Title: Boot problems after upgrade to kernel 4.15.0-48 (18.04.2LTS/i386) Status in linux package in Ubuntu: Confirmed Bug description: NOTE: Boot problems on TWO different laptops after Software Updater updated to kernel 4.15.0-48 Both laptops running Ubuntu 18.04.2LTS i386/32bit with Xubuntu desktop. Both fresh installs from minimal CD in early April, originally kernel 0.4.15.0-47, both working fine. Bug report filed on THIS MACHINE: HP Compag 6710b, Intel Core2 Duo T7100 @ 1.8GHz, RAM 4GB, with Intel integrated graphics controller GM965/GL960 (with kernel command line parameter ¨video=SVIDEO-1:d¨) SYMPTOM: 4.15.0-48 requires a second ´recovery´ boot to get it up and running. Will not boot properly after a normal shutdown - screen goes funny and it hangs Does boot successfully after a hard shutdown - detects improper shutdown, loads grub menu, then boot successfully Boot problem appeared after update from kernel version 4.15.0-47 to 4.15.0-48 Problem occurs in 4.15.0-48 kernel, but not in 4.15.0-47 (which still boots normally after a normal shutdown) OTHER MACHINE: Even older!!! ASUS W1N Pentium M banias 1.7gHz, 1.5GB RAM, ATI Mobility Radeon 9600 GPU. Running with command line parameter "forcepae". SYMPTOM: Won't boot at all. Was working fine under 4.15.0-47 as originally installed, until software updater installed 4.15.0-48. Now it won't boot (hangs, black screen), and I can't even get into the grub menu to try the older kernel. More Info on what I've already tried for troubleshooting (on the HP6710b) is outlined in https://answers.launchpad.net/ubuntu/+question/680486 Happy to provide more info if needed, but I'm just an end user user and new to Linux, so will be on a learning curve at this end. (and apologies in advance if this a user problem, and not an actual bug). Thanks ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-48-generic 4.15.0-48.51 ProcVersionSignature: Ubuntu 4.15.0-48.51-generic 4.15.18 Uname: Linux 4.15.0-48-generic i686 ApportVersion: 2.20.9-0ubuntu7.6 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: michael 1681 F.... pulseaudio CurrentDesktop: XFCE Date: Mon May 6 21:16:34 2019 MachineType: Hewlett-Packard HP Compaq 6710b PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-48-generic root=UUID=1f4f1f23-b034-4931-af71-c51eba39fbd3 ro video=SVIDEO-1:d RelatedPackageVersions: linux-restricted-modules-4.15.0-48-generic N/A linux-backports-modules-4.15.0-48-generic N/A linux-firmware 1.173.5 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/18/2008 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68DDU Ver. F.13 dmi.board.name: 30C0 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 71.2E dmi.chassis.asset.tag: SGH8080272 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68DDUVer.F.13:bd08/18/2008:svnHewlett-Packard:pnHPCompaq6710b:pvrF.13:rvnHewlett-Packard:rn30C0:rvrKBCVersion71.2E:cvnHewlett-Packard:ct10:cvr: dmi.product.family: 103C_5336AN dmi.product.name: HP Compaq 6710b dmi.product.version: F.13 dmi.sys.vendor: Hewlett-Packard --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.6 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: michael 1034 F.... pulseaudio /dev/snd/controlC0: michael 1034 F.... pulseaudio CurrentDesktop: XFCE DistroRelease: Ubuntu 18.04 Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 046d:c00f Logitech, Inc. MouseMan Traveler/Mobile Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: ASUSTeK Computer Inc. W1N Package: linux (not installed) PccardctlIdent: Socket 0: no product info available Socket 1: no product info available PccardctlStatus: Socket 0: no card Socket 1: no card ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-48-generic root=UUID=5e6f46b1-73a8-4779-bc20-414a46286723 ro forcepae quiet splash ProcVersionSignature: Ubuntu 4.15.0-48.51-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-48-generic N/A linux-backports-modules-4.15.0-48-generic N/A linux-firmware 1.173.5 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: bionic Uname: Linux 4.15.0-48-generic i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/26/2004 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0203 dmi.board.name: W1N dmi.board.vendor: ASUSTeK Computer Inc. dmi.board.version: 1.0 dmi.chassis.asset.tag: ATN12345678901234567 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0203:bd05/26/2004:svnASUSTeKComputerInc.:pnW1N:pvr1.0:rvnASUSTeKComputerInc.:rnW1N:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0: dmi.product.name: W1N dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.6 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: michael 1034 F.... pulseaudio /dev/snd/controlC0: michael 1034 F.... pulseaudio CurrentDesktop: XFCE DistroRelease: Ubuntu 18.04 Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 046d:c00f Logitech, Inc. MouseMan Traveler/Mobile Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: ASUSTeK Computer Inc. W1N Package: linux (not installed) PccardctlIdent: Socket 0: no product info available Socket 1: no product info available PccardctlStatus: Socket 0: no card Socket 1: no card ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-48-generic root=UUID=5e6f46b1-73a8-4779-bc20-414a46286723 ro forcepae quiet splash ProcVersionSignature: Ubuntu 4.15.0-48.51-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-48-generic N/A linux-backports-modules-4.15.0-48-generic N/A linux-firmware 1.173.5 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: bionic Uname: Linux 4.15.0-48-generic i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/26/2004 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0203 dmi.board.name: W1N dmi.board.vendor: ASUSTeK Computer Inc. dmi.board.version: 1.0 dmi.chassis.asset.tag: ATN12345678901234567 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0203:bd05/26/2004:svnASUSTeKComputerInc.:pnW1N:pvr1.0:rvnASUSTeKComputerInc.:rnW1N:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0: dmi.product.name: W1N dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. 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