towc's questions

My installation process is stuck at Almost finished copying files.

To get there, I mostly followed https://community.acer.com/en/discussion/comment/903305/#Comment_903305:

• on my Dell, dd-ed the ubuntu 20.04 iso from the official website into a 32GB usb stick
• on the Acer, disabled secure boot, switch SATA mode to AHCI, enabled F12BootMenu, disabled Fast Boot, saved and rebooted, entered the GRUB menu.

In the grub menu, I tried both normal installation, and safe graphics installation, but both seem to lead to the same results.

I also tried adding nomodeset to the GRUB lines and pressing C-x to boot through them. They were different from what I saw online because of the --- at the end:

linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---

I tried adding nomodeset after splash, and after --- on another reboot, but no change there.

I also tried noacpi by changing the grub file on the live trial, as explained in XDG_RUNTIME_DIR is not owned by us (uid 0), but no change.

Not connecting to wifi, selecting a minimal installation, and not installing third party software seemed to have no effect either.

They all lead to getting stuck at Almost finished copying files, with a log similar to this, from cat /var/log/syslog: https://pastebin.com/xHdncmHK

I can share command output after setting up a local js server on my Dell to put post data into a file and running wget -qO- 192.168.0.157:8000 --post-file=<file>.

$ lspci
00:00.0 Host bridge: Intel Corporation 10th Gen Core Processor Host Bridge/DRAM Registers (rev 02)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 02)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics (rev 05)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 02)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Comet Lake PCH Thermal Controller
00:14.0 USB controller: Intel Corporation Comet Lake USB 3.1 xHCI Host Controller
00:14.2 RAM memory: Intel Corporation Comet Lake PCH Shared SRAM
00:14.3 Network controller: Intel Corporation Wi-Fi 6 AX201
00:15.0 Serial bus controller [0c80]: Intel Corporation Comet Lake PCH Serial IO I2C Controller #0
00:15.1 Serial bus controller [0c80]: Intel Corporation Comet Lake PCH Serial IO I2C Controller #1
00:16.0 Communication controller: Intel Corporation Comet Lake HECI Controller
00:17.0 SATA controller: Intel Corporation Device 06d3
00:1b.0 PCI bridge: Intel Corporation Comet Lake PCI Express Root Port #21 (rev f0)
00:1d.0 PCI bridge: Intel Corporation Device 06b5 (rev f0)
00:1f.0 ISA bridge: Intel Corporation Comet Lake LPC Controller
00:1f.3 Audio device: Intel Corporation Comet Lake PCH cAVS
00:1f.4 SMBus: Intel Corporation Comet Lake PCH SMBus Controller
00:1f.5 Serial bus controller [0c80]: Intel Corporation Comet Lake PCH SPI Controller
01:00.0 VGA compatible controller: NVIDIA Corporation TU106 [GeForce RTX 2060] (rev a1)
01:00.1 Audio device: NVIDIA Corporation TU106 High Definition Audio Controller (rev a1)
01:00.2 USB controller: NVIDIA Corporation TU106 USB 3.1 Host Controller (rev a1)
01:00.3 Serial bus controller [0c80]: NVIDIA Corporation TU106 USB Type-C UCSI Controller (rev a1)
06:00.0 Non-Volatile memory controller: Sandisk Corp Device 5009 (rev 01)
07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. Device 2600 (rev 21)

$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0         7:0    0     2G  0 loop /rofs
loop1         7:1    0  29.9M  1 loop /snap/snapd/8542
loop2         7:2    0    55M  1 loop /snap/core18/1880
loop3         7:3    0 255.6M  1 loop /snap/gnome-3-34-1804/36
loop4         7:4    0  62.1M  1 loop /snap/gtk-common-themes/1506
loop5         7:5    0  49.8M  1 loop /snap/snap-store/467
sda           8:0    1  28.9G  0 disk 
├─sda1        8:1    1   512M  0 part 
└─sda2        8:2    1  28.4G  0 part /target
nvme0n1     259:0    0 953.9G  0 disk 
├─nvme0n1p1 259:1    0   100M  0 part /target/boot/efi
├─nvme0n1p2 259:2    0    16M  0 part 
├─nvme0n1p3 259:3    0 952.8G  0 part /cdrom
└─nvme0n1p4 259:4    0     1G  0 part 

This one is a bit puzzling because I didn't select zfs as my filesystem

$ service --status-all
 [ + ]  acpid
 [ - ]  alsa-utils
 [ - ]  anacron
 [ - ]  apparmor
 [ + ]  apport
 [ + ]  avahi-daemon
 [ + ]  bluetooth
 [ - ]  console-setup.sh
 [ + ]  cron
 [ - ]  cryptdisks
 [ - ]  cryptdisks-early
 [ + ]  cups
 [ + ]  cups-browsed
 [ + ]  dbus
 [ + ]  gdm3
 [ + ]  grub-common
 [ - ]  hwclock.sh
 [ + ]  irqbalance
 [ + ]  kerneloops
 [ - ]  keyboard-setup.sh
 [ + ]  kmod
 [ - ]  lvm2
 [ - ]  lvm2-lvmpolld
 [ + ]  network-manager
 [ + ]  openvpn
 [ - ]  plymouth
 [ - ]  plymouth-log
 [ - ]  pppd-dns
 [ + ]  procps
 [ - ]  pulseaudio-enable-autospawn
 [ - ]  rsync
 [ + ]  rsyslog
 [ - ]  saned
 [ - ]  speech-dispatcher
 [ - ]  spice-vdagent
 [ + ]  udev
 [ + ]  ufw
 [ + ]  unattended-upgrades
 [ - ]  uuidd
 [ + ]  whoopsie
 [ - ]  x11-common
 [ - ]  zfs-import
 [ + ]  zfs-mount
 [ + ]  zfs-share
 [ + ]  zfs-zed

In fact, I'm not even sure where my main partition ended up, it's supposed to be a 1TB SSD:

$ df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
udev           devtmpfs  7.7G  4.0K  7.7G   1% /dev
tmpfs          tmpfs     1.6G  1.8M  1.6G   1% /run
/dev/nvme0n1p3 fuseblk   953G   48G  906G   6% /cdrom
/dev/loop0     squashfs  2.0G  2.0G     0 100% /rofs
/cow           overlay   7.8G   81M  7.7G   2% /
tmpfs          tmpfs     7.8G     0  7.8G   0% /dev/shm
tmpfs          tmpfs     5.0M  8.0K  5.0M   1% /run/lock
tmpfs          tmpfs     7.8G     0  7.8G   0% /sys/fs/cgroup
tmpfs          tmpfs     7.8G   12K  7.8G   1% /tmp
tmpfs          tmpfs     1.6G   60K  1.6G   1% /run/user/999
/dev/loop1     squashfs   30M   30M     0 100% /snap/snapd/8542
/dev/loop2     squashfs   55M   55M     0 100% /snap/core18/1880
/dev/loop3     squashfs  256M  256M     0 100% /snap/gnome-3-34-1804/36
/dev/loop4     squashfs   63M   63M     0 100% /snap/gtk-common-themes/1506
/dev/loop5     squashfs   50M   50M     0 100% /snap/snap-store/467
/dev/sda2      ext4       28G  5.5G   21G  21% /target
/dev/nvme0n1p1 vfat       96M   52M   45M  54% /target/boot/efi

I'm on 18.04, using i3, and sometimes when I go from some workspace to a workspace containing chromium or opera, those windows aren't redrawing. I can still press ctrl+s to open a "save to" popup, which renders fine.

The behaviour is quite quirky, and it happens maybe twice a day, and I can't seem to find a way to reproduce it reliably. Here are a bunch of observations:

1. I think I usually have cpu usage of 20%+ (according to mpstat 2 1 | awk '$12 ~ /[0-9.]+/ { print 100 - $12"%" }'), when it happens
2. After it happens, I can't use mod+q (to quit window from i3), ctrl+q (to quit from opera), but I can seem to be able to run ctrl+w to quit a tab, even if I don't see it immediately. When I reopen opera, that tab is gone
3. I can quit the process by running fkill opera, or the appropriate amount of pkill opera
4. About a week ago, I was running ubuntu 16.04 with i3, and I already had problems. I thought maybe getting a fresh install would help, but it didn't. It worked fine for a few days, but after ~3 days, I started getting the errors again, so maybe there's a package that I installed that broke it?
5. Opera/Chromium didn't always do this. It started about 1-2 months ago
6. When it does the rendering bug, it simply shows whatever was occupying those pixels in the previous workspace.
7. I can still open terminals and other windows on that workspace, and they will display just fine. If I then shrink or remove them, the pixels previously occupied by that new window will now have changed to whatever was in those windows
8. the mouse cursor doesn't leave a trail
9. I think it happened with other resource-heavy windows, but I don't remember for sure

I haven't managed to isolate the conditions and versions of the browsers, i3, or other packages. I'm running the latest stable of everything, as far as I know.

From what I can tell, it could be anything from a driver error, to a bug in some package. I'm not even sure where to look for possible logs of this

Any suggestions? Does this happen to anyone else? Should I report this to opera/chrome? Should I also file a bug report for i3? I'm very confused

I have a standard Ubuntu 16.04 laptop (recent install), which just won't play videos at all. If I went on youtube, the video would load, and I can jump from various places in the timeline and see the frames, but the video just won't play. No errors in the console. I then look for examples of html5 <video> elements, and I notice that I can't play any of them either. Then I try flash videos, like this one, which loads and I starts only for a couple of seconds, but then stops and does nothing, not even allow me to go back in frames that were played and play them again. Just jump from point in time to point in time and see the individual frame. Again, no errors in console or network. Or this other flash video, which works all the way through and I can replay it.

This happens on both chrome and firefox.

A weird aspect, is that it seems to allow me to play a few seconds on youtube after I reboot, and then stops, as if there was something that got "saturated".

I then tried installing a couple of native mp4 viewers, just to see if I could watch videos that way, but still nothing. One of them is the default ubuntu video tool, and the other is gnome mpv.

I'm slightly confused on what do I try next other than random packages.

It's also worth mentioning that I'm using i3 rather than unity-based technology

EDIT

output of lspci:

00:00.0 Host bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series SoC Transaction Register (rev 0e)
00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0e)
00:13.0 SATA controller: Intel Corporation Atom Processor E3800 Series SATA AHCI Controller (rev 0e)
00:14.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx, Celeron N2000 Series USB xHCI (rev 0e)
00:1a.0 Encryption controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Trusted Execution Engine (rev 0e)
00:1b.0 Audio device: Intel Corporation Atom Processor Z36xxx/Z37xxx Series High Definition Audio Controller (rev 0e)
00:1c.0 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 1 (rev 0e)
00:1c.1 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 2 (rev 0e)
00:1c.2 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 3 (rev 0e)
00:1f.0 ISA bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Power Control Unit (rev 0e)
00:1f.3 SMBus: Intel Corporation Atom Processor E3800 Series SMBus Controller (rev 0e)
01:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)

The issue

I recently installed Ubuntu 16.04 on a windows machine. Everything seems to be working fine, except for the fact that wifi doesn't seem to be an option for connections

I still have access to other machines that I can use to transfer packages offline

What I've tried, that didn't work

googling away, I've found a post from someone saying that I need to use these commands:

rfkill list
rfkill unblock wlan0

and other commands, but then an error appeared saying Bogus unblock argument 'wlan0', which made sense because it wasn't listed in rfkill list

I then tried this, but the final progress bar didn't seem to proceed, as some users complained in the comments

So I then tried installing bcmwl-kernel-source manually, along with the other packages it needed. I did that and rebooted the machine several times, but I still don't see the wifi as an option

The last thing I tried was setting up a new connection using the "edit connections" button from the image above, and set it to what I could see from my other ubuntu machine over wifi, but I still don't see the option to connect through that anywhere.

outputs of requested commands

Output of lspci -nnk | grep 0280:

01:00 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)

Output of sudo modprobe ul:

modprobe: ERROR: could not insert 'wl': Required key not available

--

Any help is greatly appreciated