users March 2018

users@lists.fedoraproject.org

131 participants
124 discussions

syncing ESP on UEFI computers, was: F19 RAID1 drive died - what if it was sda that died?
by Chris Murphy 21 Mar '18

21 Mar '18

Upstream md/mdadm list ( linux-raid(a)vger.kernel.org ) archives have a bunch of proscriptions on using mdadm to sync EFI System partitions. Last time I checked circa Fedora 21, the installer would in fact let you setup a raid1 and mark it for use as /boot/efi (i.e. the ESP). There are a bunch of logical and domain violations by doing this, but the biggest reason for not doing it is if there is a change to either ESP, mdadm raid cannot resolve the ambiguity, and if it discovers mismatches in sectors between the two drives, it can mix and match the fixups: some sectors from A go to B, and some sectors from B go to A. And that's because mdadm has no idea which one is correct, only that they are different, and a resync just makes them the same again. So it can end up corrupting both ESPs. The firmware is allowed to modify the ESP even though this is probably rare in practice. Anyway, I think it's better to change the symlink in /etc/ grub2-efi.cfg -> ../boot/efi/EFI/fedora/grub.cfg So that it points to /boot/grub2/grub.cfg just as it does on BIOS systems. Then create a "forwarding" grub.cfg on /boot/efi that goes and finds the real grub.cfg. The real grub.cfg is on either /boot or / on some kind of RAID so getting GRUB to find it is actually pretty easy: it will look for an md UUID (the mdadm raid volume ID) and then it needs to look for a file system volume UUID. Since these things are the same on all member volumes, so long as you have the minimum drives needed for successful degraded operation, GRUB will find the real grub.cfg. And GRUB finds the forwarding one, just by the fact it's in the same directory on /boot/efi/EFI/fedora as the bootloader. It's possible to use the real grub.cfg as a template, and just chop it down to a few lines needed to search for the two UUIDs. And then use the configfile command to point to the path to the real grub.cfg. The result is completely seamless jump from the ESP forwarding grub.cfg, to the /boot real grub.cfg. And by changing the /etc symlink, grubby will update the real grub.cfg. And this will survive major version upgrades. And it's more compatible with upstream GRUB. Effectively the contents of /boot/efi (the ESP) never get modified, so they two ESPs are never out of sync. Just, if for any reason you need to recreate the grub.cfg from scratch you have to put it on /boot/grub2 rather than /boot/efi. And in the event of shim or grub update, you'll want to sync the ESPs with e.g. rsync which you can do manually, as a one time thing. Blah. Chris Murphy

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Kernel installed in wrong location
by CLOSE Dave 21 Mar '18

21 Mar '18

Fedora 27 x86_64. When DNF installs a new kernel, it isn't going into the right place (/boot) and is not detected by GRUB. Why not? For example, after installing the most recent new kernel, I see this. [root@machine ~]# ls /boot 7725dfc225d14958a625ddaaaea5962b config-4.14.11-300.fc27.x86_64 efi extlinux grub2 initramfs-0-rescue-7725dfc225d14958a625ddaaaea5962b.img initramfs-4.14.11-300.fc27.x86_64.img initrd-plymouth.img loader lost+found System.map-4.14.11-300.fc27.x86_64 vmlinuz-0-rescue-7725dfc225d14958a625ddaaaea5962b vmlinuz-4.14.11-300.fc27.x86_64 [root@machine ~]# ls /boot/7725dfc225d14958a625ddaaaea5962b 0-rescue 4.13.10-200.fc26.x86_64 4.13.9-200.fc26.x86_64 4.11.11-300.fc26.x86_64 4.13.11-200.fc26.x86_64 4.14.11-300.fc27.x86_64 4.12.11-300.fc26.x86_64 4.13.12-200.fc26.x86_64 4.14.4-200.fc26.x86_64 4.12.12-300.fc26.x86_64 4.13.13-200.fc26.x86_64 4.14.5-200.fc26.x86_64 4.12.13-300.fc26.x86_64 4.13.15-100.fc25.x86_64 4.14.6-200.fc26.x86_64 4.12.14-300.fc26.x86_64 4.13.15-200.fc26.x86_64 4.15.8-300.fc27.x86_64 4.12.5-300.fc26.x86_64 4.13.16-200.fc26.x86_64 4.15.9-300.fc27.x86_64 4.12.8-300.fc26.x86_64 4.13.16-202.fc26.x86_64 4.12.9-300.fc26.x86_64 4.13.4-200.fc26.x86_64 But RPM thinks the new kernel was installed correctly! [root@machine ~]# rpm -V kernel-core-4.15.9-300.fc27 (no output) -- Dave Close

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Razer laptop Caps-lock key of the death
by Jeandet Alexis 20 Mar '18

20 Mar '18

Hi all, I'm an happy Fedora user, I changed my laptop last year for a Razer sealth blade. Fedora/Linux works well except for the known caps-lock key which just crash the whole system when pressed: https://github.com/rolandguelle/razer-blade-stealth-linux#caps-lock- crash I tried to add XKBOPTIONS="ctrl:nocaps" in /etc/default/keyboard. The thing is that this solution doesn't seems to work on Fedora, not easy to find what to search on Google, it looks like /etc/default/keyboard isn't right config file. I'm using Gnome with Wayland. Any idea? This issue/feature is quite fun to show to friends(looks like an auto- destruct key) but quite annoying when you press caps-lock by mistake :). Yes getting it solved by Razer would be the best! But last time I asked them something, I got: " Hi Alexis, Thank you for contacting Razer Support. At this time, Razer does not officially support Linux. I am sorry for the inconvenience this might cause you. Have a nice Monday! " Best regards, Alexis.

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Restart Xorg server and Noveau driver
by Javier Perez 19 Mar '18

19 Mar '18

Hi. Xorg froze while playing a game with wine. Only the mouse worked (not even the keyboard). I had to hard reboot. Checking out the logs (journalctl) I saw repetitive nouveau errors. (sorry, not at home, else I´d post them). Other times I have been able to ssh into my machine and everything else is working. I did not try this time (my secondary machine is down for the moment). My question is: How can I restart the Xorg server and/or the nouveau driver? If I could ssh into the system, I think I could just restart both and not have to reboot the whole thing. It is more annoying that anything else because the machine boots fast, but still I think it should not be necessary. Just polishing my skills. Thanks -- ------------------------------ /\_/\ |O O| pepebuho(a)gmail.com ~~~~ Javier Perez ~~~~ While the night runs ~~~~ toward the day... m m Pepebuho watches from his high perch.

2 1

include unicode chars in TeX/LaTeX documents
by Antonio Olivares 19 Mar '18

19 Mar '18

Dear fellow fedora users, In including a soccer ball character in Unicode, I have found https://www.fileformat.info/info/unicode/char/26bd/index.htm And it works. I try to include in latex document and the character does not show up. I have tried different variations after \documentclass{article} \usepackage[utf8]{inputenc} And none seem to work. Is there an easy way to include Unicode chars in latex. Best Regards, Antonio

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sound problem
by François Patte 19 Mar '18

19 Mar '18

Bonjour, When I log-in, sound is deactivated and I have to manually start it, doing: 1- killall -9 pulseaudio 2- start-pulseaudio-x11 3- open mixer go to "configation" tab and choose analogic stero duplex. What is wrong in my sound config and how to correct this. Thank you. -- François Patte UFR de mathématiques et informatique Laboratoire CNRS MAP5, UMR 8145 Université Paris Descartes 45, rue des Saints Pères F-75270 Paris Cedex 06 Tél. +33 (0)6 7892 5822 http://www.math-info.univ-paris5.fr/~patte

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[LEARNING OUTCOME] Wi-Fi WPA Hacking Tool is Totally Useless on New Wireless Routers
by Turritopsis Dohrnii Teo En Ming 19 Mar '18

19 Mar '18

Hi, I am sharing my learning outcomes. Recently I downloaded Kali Linux 64-bit Version 2018.1 and ran it on my HP laptop with the integrated Intel Dual Band Wireless-AC 8260 Wireless Network Card. I wanted to test if I could hack the Wi-Fi WPA password on Ruckus R700 Access Point (AP) and the Aztech DSL8900GR(AC) Wireless Router. So I started using the Reaver WPA cracking tool. I understand that the Reaver tool works because there is a bug with Wi-Fi Protected Setup (WPS). I have no luck with Reaver on the Ruckus R700 Access Point. After running Reaver, I found out that WPS is permanently disabled on the Ruckus R700 AP with no option to turn it back on at all. Hence It is not possible to hack the WPA password on Ruckus R700 AP. Understanding that I couldn't do anything further with Ruckus R700 AP, I proceeded to test Reaver on the Aztech DSL8900GR(AC) wireless router. In this case, I also found out that WPS is disabled by default on the Aztech wireless router. Reaver will not be useful at all if WPS is disabled. But there is an option to enable WPS. So I enabled WPS in the Aztech wireless router configuration page. And continued testing with Reaver. But because Aztech wireless router has the rate limiting security feature, brute force password attacks will be very slow and probably take forever. The rate limiting security feature on the Aztech wireless router is meant to slow you down when you are brute forcing the WPS pin. So here is my conclusion: Reaver Wi-Fi WPA hacking tool is totally useless on new wireless routers which have the WPS disabled or have implemented a fix for the WPS bug. Are there any other WPA cracking tools which I can use in my educational learning journey? Please advise. Mr. Turritopsis Dohrnii Teo En Ming Singapore 13 March 2018 Tuesday 4:28 PM Singapore Time ===BEGIN SIGNATURE=== Turritopsis Dohrnii Teo En Ming's Academic Qualifications as at 30 Oct 2017 [1] https://tdtemcerts.wordpress.com/ [2] http://tdtemcerts.blogspot.sg/ [3] https://www.scribd.com/user/270125049/Teo-En-Ming ===END SIGNATURE===

2 1

Troubleshooting random hangs
by Suvayu Ali 19 Mar '18

19 Mar '18

Hi, I have been having random hangs on my new Ryzen workstation (Ryzen 5 2400G + B350 mobo). My hardware is supposedly properly supported on 4.15+ kernels. But I have been unable to boot with any of the ones in the repo. That said, I can boot with older kernels, but the desktop hangs randomly. When I say hang, I mean it freezes, and my only recourse is to reset my computer. I have tried to login remotely, but then I get "No route to host" from ssh. Looking at the journal, I can't figure out what is causing these hangs. If someone could have a look, that would be wonderful. Logs from the last two hangs: https://paste.fedoraproject.org/paste/8T~X8BYuVboAJK3Mkal72A https://paste.fedoraproject.org/paste/qypJAnAKE01GD-OgC6n0SQ TIA, -- Suvayu Open source is the future. It sets us free.

2 3

system-module-load fails to load but.... nevertheless loads!
by François Patte 19 Mar '18

19 Mar '18

Bonjour, At every boot I can see this message: system-load-modules fails to load vboxpci, vboxnetadp, vboxnetflt, vboxdrv but when system is up, lsmod shows these modules as loaded! What's this? Regards -- François Patte UFR de mathématiques et informatique Laboratoire CNRS MAP5, UMR 8145 Université Paris Descartes 45, rue des Saints Pères F-75270 Paris Cedex 06 Tél. +33 (0)6 7892 5822 http://www.math-info.univ-paris5.fr/~patte

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dnf Upgrade Produces GPG Error
by Stephen Morris 18 Mar '18

18 Mar '18

Hi, I've just attempted to do a sudo dnf upgrade to install the 343 updates that are available, and after downloading all the packages it got a GPG error and terminated. Has anyone else seen this and is able to provide some guidance on what I need to look at to identify why? [SKIPPED] vulkan-filesystem-1.1.70.0-1.fc27.noarch.rpm: Already downloaded [SKIPPED] xdg-utils-1.1.2-4.fc27.noarch.rpm: Already downloaded [SKIPPED] xfsprogs-4.15.1-1.fc27.x86_64.rpm: Already downloaded Package flash-plugin-29.0.0.113-1.fc27.x86_64.rpm is not signed The downloaded packages were saved in cache until the next successful transaction. You can remove cached packages by executing 'dnf clean packages'. Error: GPG check FAILED regards, Steve

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