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keepitsimpleengineer's questions

Martin Hope
keepitsimpleengineer
Asked: 2018-05-10 09:57:20 +0800 CST
  • 5

My home directory looks like this:

# ls -lt
total 417656
drwxrwxr-x 2 ljohnson ljohnson 427577344 May  9 08:48 2z9TnVLzmf
drwxr-xr-x 4 ljohnson ljohnson      4096 May  9 07:42 transmission
drwxr-xr-x 6 ljohnson ljohnson      4096 Apr  3 13:37 Downloads
drwxrwxr-x 5 ljohnson ljohnson      4096 Mar 28 07:25 Desktop
drwxrwxr-x 2 ljohnson ljohnson      4096 Sep 17  2017 saa7164
...

Where the size of 2z9TnVLzmf is a problem.

Efforts to remove such as # rm -rf have proved futile.

#ls 2z9TnVLzmf returns no result and has to be canceled.

Update: fsck is set to run at every boot for this relatively small partition

# df -hT | grep /dev/
/dev/sdc1      ext4       63G   60G  361M 100% /
tmpfs          tmpfs     2.0G   16M  2.0G   1% /dev/shm
/dev/sdb1      xfs       2.8T  1.5T  1.3T  54% /pvr
/dev/sda1      xfs       4.6T  2.9T  1.7T  64% /pvu
/dev/sdc3      xfs       395G  101G  294G  26% /pvt
/dev/sdd1      xfs       1.9T 1023G  840G  55% /pvs
home-directory command-line files rm 16.04
Martin Hope
keepitsimpleengineer
Asked: 2016-05-11 09:46:56 +0800 CST
  • 3

Whenever I upgrade Ubuntu 16.04 and there is a kernel upgrade, the update process takes a very long time when running (os-prober) and also generates the grub configuration multiple times.

os-prober Running

And for some inexplicable reason to me it runs more than once...

Setting up openssh-client (1:7.2p2-4ubuntu1) ...
Setting up linux-image-4.4.0-22-generic (4.4.0-22.39) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/dkms 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
update-initramfs: Generating /boot/initrd.img-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/unattended-upgrades 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.4.0-22-generic
Found initrd image: /boot/initrd.img-4.4.0-22-generic
Found linux image: /boot/vmlinuz-4.4.0-21-generic
Found initrd image: /boot/initrd.img-4.4.0-21-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
grub-probe: error: cannot find a GRUB drive for /dev/sdf1.  Check your device.map.
Found Windows 10 (loader) on /dev/sda1
Found Arch on /dev/sdb2
Found Ubuntu 14.04.4 LTS (14.04) on /dev/sdd2
done
Setting up linux-image-extra-4.4.0-22-generic (4.4.0-22.39) ...
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/dkms 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
update-initramfs: Generating /boot/initrd.img-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/unattended-upgrades 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.4.0-22-generic
Found initrd image: /boot/initrd.img-4.4.0-22-generic
Found linux image: /boot/vmlinuz-4.4.0-21-generic
Found initrd image: /boot/initrd.img-4.4.0-21-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin

Note: /dev/sdf is a USB thumb drive

Is there anyway to stop this behavior or by-pass running grub2 altogether as it is not really used or needed?

dual-boot
Martin Hope
keepitsimpleengineer
Asked: 2015-12-15 05:14:09 +0800 CST
  • 2

I have a mythbuntu 14.04 server. 

# uname -a
Linux KISE-055 3.16.0-55-generic #74~14.04.1-Ubuntu SMP Tue Nov 17 10:15:59 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

I have the MTU set to 4000 vice 1500 to get jumbo packets...

# ip link
...
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 4000 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 90:fb:a6:eb:d7:f3 brd ff:ff:ff:ff:ff:ff

I set the MTU in /etc/network/interfaces

# cat /etc/network/interfaces
auto lo
iface lo inet loopback
#primary wired interface
auto eth0
iface eth0 inet dhcp
post-up /sbin/ifconfig eth0 mtu 4000

Which can be seen in the output of 'ifconfig'...

~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 90:fb:a6:eb:d7:f3
      inet addr:192.168.0.55  Bcast:192.168.0.255  Mask:255.255.255.0
      inet6 addr: fe80::92fb:a6ff:feeb:d7f3/64 Scope:Link
  ⇛ ⇛ UP BROADCAST RUNNING MULTICAST  MTU:4000  Metric:1  ⇚ ⇚
      RX packets:43654 errors:0 dropped:0 overruns:0 frame:0
      TX packets:41807 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:29877609 (29.8 MB)  TX bytes:21276131 (21.2 MB)

lo        Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:65536  Metric:1
      RX packets:2010 errors:0 dropped:0 overruns:0 frame:0
      TX packets:2010 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:279223 (279.2 KB)  TX bytes:279223 (279.2 KB)

But the system does not respond to jumbo packets from other computers on the LAN. So all it's clients must use an MTU of 1500 to talk to the server.

Here's the nic...

02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 03)
    Subsystem: Foxconn International, Inc. Device 0e22
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 47
    Region 0: I/O ports at e800 [size=256]
    Region 2: Memory at fafff000 (64-bit, prefetchable) [size=4K]
    Region 4: Memory at faff8000 (64-bit, prefetchable) [size=16K]
    Expansion ROM at fdfe0000 [disabled] [size=128K]
    Capabilities: [40] Power Management version 3
            Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
            Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
            Address: 00000000fee0200c  Data: 4142
    Capabilities: [70] Express (v2) Endpoint, MSI 01
            DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
                    ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
            DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
                    RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                    MaxPayload 128 bytes, MaxReadReq 512 bytes
            DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
            LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <64us
                    ClockPM+ Surprise- LLActRep- BwNot-
            LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
                    ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
            LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
            DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR-, OBFF Not Supported
            DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
            LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
                     Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                     Compliance De-emphasis: -6dB
            LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
                     EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
    Capabilities: [ac] MSI-X: Enable- Count=4 Masked-
            Vector table: BAR=4 offset=00000000
            PBA: BAR=4 offset=00000800
    Capabilities: [cc] Vital Product Data
            Unknown small resource type 00, will not decode more.
    Capabilities: [100 v1] Advanced Error Reporting
            UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
            UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
            UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
            CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
            CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
            AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
    Capabilities: [140 v1] Virtual Channel
            Caps:   LPEVC=0 RefClk=100ns PATEntryBits=1
            Arb:    Fixed- WRR32- WRR64- WRR128-
            Ctrl:   ArbSelect=Fixed
            Status: InProgress-
            VC0:    Caps:   PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
                    Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
                    Ctrl:   Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
                    Status: NegoPending- InProgress-
    Capabilities: [160 v1] Device Serial Number 16-00-00-00-68-4c-e0-00
    Kernel driver in use: r8169
networking
Martin Hope
keepitsimpleengineer
Asked: 2013-04-19 14:13:38 +0800 CST
  • 3

I have a new re-install of Mythbuntu 12.04.2 LTS.

When I installed Skype 4.1.0.20 and tried to use it, I found that under options/Sound Devices/, under the three (Microphone,Speakers and Ringing) there were no "PulseAudio server(local)" options. This was unexpected since on my several other Linux systems that also use PulseAudio "PulseAudio server(local)" was the only option.

Also the microphone is now mute, although not shown muted in alsamixer.

In place of "PulseAudio server(local)" there is a long list of devices including many for the Logitech AK5370 microphone I use. None seem to work.

Furthermore the button to open PulseAudio Volume Control on Options/Sound Devices missing in the new install.

What could possibly be wrong?

Update: Strange behavior: I discovered one of the eight choices will work. But it seems that after cold boot, it is a different one. So everyday after boot, I spend a ¼ hour or trying each one until I find one that works. ..?..?..?

sound
Martin Hope
keepitsimpleengineer
Asked: 2013-02-20 16:06:19 +0800 CST
  • 3

A couple of time an hour, these lines show up in syslog

Feb 19 09:20:11 KISE-055 smbd[5685]: [2013/02/19 09:20:11.609603,  0] printing/print_cups.c:110(cups_connect)
Feb 19 09:20:11 KISE-055 smbd[5685]:   Unable to connect to CUPS server localhost:631 - Connection refused
Feb 19 09:20:11 KISE-055 smbd[1081]: [2013/02/19 09:20:11.610113,  0] printing/print_cups.c:487(cups_async_callback)
Feb 19 09:20:11 KISE-055 smbd[1081]:   failed to retrieve printer list: NT_STATUS_UNSUCCESSFUL

Now this computer is the client and server for Mythtv (Mythbuntu), There are no printers attached, nor does any use of the HTPC require a printer. I do use occasionally print to PDF.

What do I need to do to stop samba from performing this query and producing these messages in syslog ?

12.04
Martin Hope
keepitsimpleengineer
Asked: 2012-07-23 11:08:52 +0800 CST
  • 3

I had no problems using my Windows Media Center Remote with 10.10 Mythbuntu, but after upgrading, it no longer affects Mythbuntu.

I have verified and re-installed it in Mythbuntu Control Centre.

I have used irw to verify the ir buttons actions are properly received by the HTPC.

How do I go about fixing this?

3.2.0-26-generic (#41-Ubuntu SMP Thu Jun 14 17:49:24 UTC 2012) Xorg version: 1.11.3 (16 July 2012 08:06:31PM) GCC: 4.6 (x86_64-linux-gnu) Current updates as of 2012‧07‧21

$cat /etc/lirc/hardware.con

#Chosen Remote Control
REMOTE="Windows Media Center Transceivers/Remotes (all)"
REMOTE_MODULES="lirc_dev mceusb"
REMOTE_DRIVER=""
REMOTE_DEVICE="/dev/lirc0"
REMOTE_SOCKET=""
REMOTE_LIRCD_CONF="mceusb/lircd.conf.mceusb"
REMOTE_LIRCD_ARGS=""

#Chosen IR Transmitter
TRANSMITTER="None"
TRANSMITTER_MODULES=""
TRANSMITTER_DRIVER=""
TRANSMITTER_DEVICE=""
TRANSMITTER_SOCKET=""
TRANSMITTER_LIRCD_CONF=""
TRANSMITTER_LIRCD_ARGS=""

#Enable lircd
START_LIRCD="true"

#Don't start lircmd even if there seems to be a good config file
#START_LIRCMD="false"

#Try to load appropriate kernel modules
LOAD_MODULES="true"

# Default configuration files for your hardware if any
LIRCMD_CONF=""

#Forcing noninteractive reconfiguration
#If lirc is to be reconfigured by an external application
#that doesn't have a debconf frontend available, the noninteractive
#frontend can be invoked and set to parse REMOTE and TRANSMITTER
#It will then populate all other variables without any user input
#If you would like to configure lirc via standard methods, be sure
#to leave this set to "false"
FORCE_NONINTERACTIVE_RECONFIGURATION="false"
    START_LIRCMD=""


# lsusb | grep -i infrared
Bus 003 Device 002: ID 0471:0815 Philips (or NXP) eHome Infrared Receiver
12.04
Martin Hope
keepitsimpleengineer
Asked: 2012-06-05 13:42:07 +0800 CST
  • 4

The directions at Ubuntu Wiki apt-get source linux-image-$(uname -r) and askubuntu question Where can I find the source code for the Ubuntu Kernel? don't work…

sudouser@64bitws:~# uname -r
3.2.0-24-generic

and

sudouser@64bitws:~# apt-get source linux-image-3.2.0-24-generic
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Picking 'linux' as source package instead of 'linux-image-3.2.0-24-generic'
E: Unable to find a source package for linux

enter image description here

kernel
Martin Hope
keepitsimpleengineer
Asked: 2012-05-18 05:36:01 +0800 CST
  • 3

After upgrading to 12.04 Gnome Classic amd64,every time I log on a new additional blank panel appears on the top and bottom panels - which I delete every time. In addition, the default panel applets are duplicated in the original panels.

Also the panels in the second screen are empty (in addition to the wallpaper being hidden).

Update:

As suggested by fossfreedomm I created a new user and the same behavior occurred.

I increased the height of the panels (24>36) and the added panels did not change.

If I don't remove the added panels and log off/on I get still another - they accumulate.

If I switch user instead of logoff/logon, the add'l panel do not appear.

gnome compiz gnome-panel upgrade 12.04
Martin Hope
keepitsimpleengineer
Asked: 2012-04-29 11:40:10 +0800 CST
  • 4

I have a small private LAN with 6 Ubuntu systems. To improve performance and simplify maintenance I implemented a DNS server on my Debian firewall/router (dig shows 0ms on repeat lookups).

Will I be able to disable the new local DNS cache on my Ubuntu systems during or after the release-upgrade?

Reference:

lan dnsmasq
Martin Hope
keepitsimpleengineer
Asked: 2011-11-26 09:35:07 +0800 CST
  • 4

New clean install of x86 11.10 desktop. Dual boot with windows XP and Linux on separate drives.

After install grub will not boot Windows, but by changing boot drive boots fine.

When I go to fix this I find from http://bootinfoscript.sourceforge.net/ and a link to http://sourceforge.net/apps/mediawiki/bootinfoscript/index.php?title=Boot_Problems:search my problem, the message on the grub boot error screen:

error: no such device: 6⋯⋯⋯⋯⋯⋯⋯

So I follow the Step2 and compare the output of:

sudo blkid and

sudo nano /boot/grub/grub.cfg

The UUIDs in both match for the Windows drive, so I do the fix in Step 4 "remove the search lines for …" in /usr/lib/grub/grub-mkconfig_lib, commenting out the three lines as before⋯

# if fs_uuid="`${grub_probe} --device ${device} --target=fs_uuid 2> /dev/null`" ; then
# echo "search --no-floppy --fs-uuid --set ${fs_uuid}"
# fi

I run sudo update-grub and check /etc/default/grub.cfg and see that it now identifies the Windows partition not by UUID, which I suppose is the workaround.

But now when I try to boot 11.10 Desktop, I get:

error: no such partition… …

and when I try to boot Windows, I get:

error: invalid signature.

So Now, how do I fix this…

The boot problem and find a workaround that works?

11.10
Martin Hope
keepitsimpleengineer
Asked: 2011-11-23 14:47:54 +0800 CST
  • 3

New 11.10 x86 desktop installation

My new install is mute, troubleshooting provides no help but several of these messages appear in the syslog:

Nov 21 10:10:33 WRKSTAx86 pulseaudio[1840]: [alsa-sink] alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
Nov 21 10:10:33 WRKSTAx86 pulseaudio[1840]: [alsa-sink] alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_emu10k1'. Please report this issue to the ALSA developers.

Audio worked with 10.4, 10.10. and 11.04 on this system

Is this the show stopper? How do you report a bug to the ALSA developers?

11.10