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.
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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:
USERPID ACCESS COMMAND
/dev/snd/controlC0: michael1681 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:
