installed lubuntu 18.04.1 on dell 755 without updates
this was install mentioned in #13 of
https://bugs.launchpad.net/ubuntu/cosmic/+source/plymouth/+bug/1794292 -
oct 5 where I incorrectly installed x86_64 without realizing it :(
i did NOT format /, and used existing /home from #13 (of other #1794292)
rebooted post install, pointed sources to my ISP's ubuntu mirror, dist-upgrade
& reboot
added canonical kernel ppa; changed [ppa] source to point to cosmic;
update & install kernel. reboot & login (normally!)
guiverc@755-lubu:~$ apt-cache policy linux-image-4.18.0-10-generic
linux-image-4.18.0-10-generic:
Installed: 4.18.0-10.11
Candidate: 4.18.0-10.11
Version table:
*** 4.18.0-10.11 500
500 http://ppa.launchpad.net/canonical-kernel-team/unstable/ubuntu
cosmic/main i386 Packages
100 /var/lib/dpkg/status
guiverc@755-lubu:~$ screenfetch -n
guiverc@755-lubu
OS: Ubuntu 18.04 bionic
Kernel: i686 Linux 4.18.0-10-generic
Uptime: 2m
Packages: 1396
Shell: bash 4.4.19
Resolution: 1680x1050
DE: LXDE
WM: OpenBox
WM Theme: Onyx
GTK Theme: Lubuntu-default [GTK2]
Icon Theme: Lubuntu
Font: Ubuntu 11
CPU: Intel Core2 Duo E6850 @ 2x 2.085GHz
GPU: AMD/ATI RV516 [Radeon X1300/X1550 Series]
RAM: 354MiB / 4923MiB
--
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/1794922
Title:
lubuntu 18.10 x86 (32bit) image fails to load "ehci-pci 0000:00:a.7:
dma_direct_map_sg: overflow 0x000000016e3f3000+2048 of device mask
ffffffff" repeats
Status in linux package in Ubuntu:
Confirmed
Status in linux package in Debian:
Unknown
Bug description:
-- Background --
Testing the x86 (32bit) ISO image on various machines.
After zsync download, the thumb-drive is tested ("check disk for
defects") & passes; and worked fine on two systems today (dell d610 &
hp dx6120), however
-- Issue --
dell 755 (desktop) & hp dc7700 (small form factor) it just sits at
lubuntu plymouth screen.
switching to messages, it's just the following repeating
// on dell 755
"ehci-pci 0000:00:1a.7: dma_direct_map_sg: overflow 0x000000016e3f3000+2048
of device mask ffffffff"
// on hp dc7700
"ehci-pci 0000:00:1a.7: dma_direct_map_sg: overflow 0x0000000162317000+2048
of device mask ffffffff"
NOTE: I can't copy/paste from systems, as it never completes boot; I
left it >30mins (on 755) & it just kept repeating message. I've
manually typed it; so typo's could have been made.
A discussion on #lubuntu-devel provided a possible cause (Thank you
Walter!) -
---
<wxl> guiverc: lyorian:
http://debian.2.n7.nabble.com/Bug-908924-dma-direct-map-sg-overflow-on-USB-access-after-upgrade-to-kernel-4-18-td4387757.html
<wxl> seems like it's a usb issue of some kind with 4.18
---
This fits because whilst I do my testing mostly on d610 & t43 (no
issues today), I'd tested Lubuntu 18.10 before on the dell 755 with no
issues. My last test was also long enough ago to be on 4.17 kernel
(suspicion)
---
// on hp 8200 elite sff (i5-2400, 8gb, nvidia quadro 600)
[ 99.999999] ehci-pci 0000:00:1d.0:dma_direct_map_sg: overflow
0x0000000223ad7000+2048 of device mask ffffffff
errors on booting 'live' (see #16) for real
BUT
the same ISO works fine on same box when a virtual machine (Virtual box on a
GNU/Linux host and "Type: Linux Version: Ubuntu (32-bit)" virtual machine)
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