Root Access

forest

00:00

Well, you could crash any system with echo c > /proc/sysrq-trigger lol

bwDraco

Obviously.

(assuming magic SysRq keys are enabled in the kernel)

> Kernel panic - not syncing: sysrq triggered crash

forest

It doesn't require the keys to be enabled.

I believe all the triggers can be accessed through that file (assuming the file is enabled itself).

bwDraco

00:35

Let's dump 32 GB of core.

Hmm. LsaIso only runs if virtualization-based security is enabled.

It couldn't even draw the entire error message.

AIUI this is done through a low-level rendering routine; in rare situations, you could literally see it draw one letter at a time.

brian ~ % eix --homepage suckless
* app-editors/sandy
     Available versions:  ~0.4-r1 {savedconfig}
     Homepage:            tools.suckless.org/sandy
     Description:         an ncurses text editor with an easy-to-read, hackable C source

* app-misc/lsx
     Available versions:  0.1-r1
     Homepage:            web.archive.org/web/20160104002819/http://tools.suckless.org:80/…
     Description:         list executables

* dev-libs/libgrapheme
     Available versions:  ~1
     Homepage:            libs.suckless.org/libgrapheme

Huh.

@forest: since you said you use dwm and st...

It it worth learning a tiling window manager?

bwDraco

01:23

So much more to learn.

I'm going to try i3wm.

50 pages of documentation, oh my.

...and I've gone past 1,000 clicks on my new printer.

bwDraco

01:50

(got absolutely no plans to remove KDE Plasma)

bwDraco

02:31

I think I'm trying to learn too many things at once. Jesus, just how much time and energy would I need to do all this stuff?

Hennes

08:07

1000 clicks on a printer?
uhm. Pages I grok, but clicks?

Also, whee 6950 ordered

bertieb

09:16

some kinda metering term

something about usage billing

Hennes

10:09

Ok. Easlily solved them,. Do not conNect mouse to printer :)

But yes, I know abot your <Strike>fridge</strike> printer.

2

bwDraco

Apr 11 at 23:07, by bwDraco

Why "clicks" on a "meter"? Because the very first plain-paper photocopier, the Xerox 914, had a physical meter that counted the number of copies made. You'd mail them meter reads and get billed for the appropriate amount, just like a utility meter.

Hennes

Water, gas, lectricity, copies... Heh

bwDraco

10:46

@Hennes Congrats! GPUs are finally in stock again, right?

Burgi

11:15

they are still overpriced

bwDraco

11:56

Xerox 914 - Paper jam in fuser can cause paper to catch fire.

Hennes

in stock, often still overpriced though

as in, if release price was 700 Eur in 2020 then a normal price tday would be a lot lower.
But they only dropped to near release prices

And the refreshes started with inflated release prices.
Esp. Nvidia 'room heater' like the 3090Ti

450W. Watt the F!

2

AMD is more power friendly. More memory. And works under not windows where NV only has binary blobs

bwDraco

(I've had paper jams in the fuser cause paper to get discolored)

MiG

12:13

graphics card drawing 450W? wow :x

bwDraco

As if 375W wasn't enough. I'm not happy at how much heat my desktop dumps into my room.

Hennes

4090 (next gen) has designs for up to 600W for the non overclocked factory models

with multiple 12 pins connectors

bwDraco

May 7 at 13:19, by bwDraco

Finally got to doing some power measurements on my desktop... about 310-320W from Astaroth proper under a reduced-power gaming load (GPU set to 175W), up to a maximum of 550-600W with higher CPU load and maximum GPU power (375W). The monitors contribute about 35W.

(my Linux laptop idles at 3-4W and is absurdly efficient; it helps that it runs Gentoo, where everything is optimized for the hardware, like Macs)

MiG

@bwDraco Gonna be extra interesting with increased heat waves... I once even opened the case of my gaming PC during those, pointed a table fan in and only then it wouldn't trip over excessive temperatures

bwDraco

It's a full tower. There's more than enough thermal capacity.

MiG

12:24

yeah, mine was a midi tower back then

bwDraco

Astaroth has never come close to overheating during normal operation.

MiG

but room temp was 35+C at that point, so I needed vastly increased airflow

bwDraco

Still remember when "microtowers" were big... because my full-tower desktop would dwarf them!

bertieb

@MiG 35°C? ewwwww

bwDraco

Corsair Graphite 760T, 564mm x 246mm x 568mm (HWD), swing-open windowed side door.

ttyl.

MiG

12:30

@bertieb horribly designed student complex that was basically a huge solar collector

@bwDraco I was kinda happy with my midi towers tbh, full towers are just a bit too much to have in the living room :x

Journeyman Geek

12:44

@MiG wierdly I prefer big cases cause I have big hands ._.

MiG

So do I, I still prefer 'just the right size' - and considering what went in a big tower would just be a whole lot of air

even my 12 disk home server is in a midi tower - it's pretty full, but I've carefully designed airflow on each set of HDDs so they're staying pretty fresh

Hennes

I liked full towers since I often had 6-9 harddrives.
No more need for them since everything moved to NVME

MiG

hehe, see above :P

Hennes

I do miss MNMV slots though. Only 3 on the motherboard, PCIe addin card bought (so 4x 2TB total)

MiG

and bulk storage still means oldfashioned HDDs, and therefore thermal output

Hennes

12:48

I also miss expension slots

MiG

the case I got could house an additional drive cage, pretty well designed that

fractal-design.com/products/cases/define/define-r5/black

Hennes

Old was (ISA/PCI)

SCSI card (adaptec 1542cf)
SCSI card NCR 810 (fast SCSI)
SCSi card High voltage differention
NIC (ISA, 10Gbit net)
NIC (PCI, 100 MBIT)
grahics? sounds.... sory, out of slots

MiG

heh, ISA

I'm imagining a harp sound introducing a flashback right now :P

Journeyman Geek

@Hennes ..... ISA 10Gbit???????

:D

Hennes

Ghz. old SASI and SCI was 5Mhz signaling

fast SCSI was 10MHz

Oh, the 5950 card will be run in an x16 slot, at x8 speeds. laCK OF LANES

I mean, what one would want is:
16 graphics
16 NvME (4x4)
8 Old NIC
4 Extra USB-C

So 44 or more PCIe lanes.

It is anoying that regular consumer boards and CPU's do not offer that.

MiG

12:53

I just went with a workstation one... that kinda started with wanting ECC memory and therefore a xeon, but as a bonus the main board had a lot of features

Hennes

And that is without plugging in extra stuff like eSATA (for external HDDs) card, none of the HW RAID cards which are collecting dust, no capture card, ...

yeah. Xeon or treadripper seems to be required for enthousiast level

MiG

got an Areca RAID card lying around, but even though I could've used its ports, apparently they're recommended against as passthrough when using ZFS

Hennes

With ZFS on freeBSD they indeed did.
Either your OS (driver, FS etc) is Smart, or your card. But not both

And modern setups are fast enough to do good things

but if you havre a 80486 then those raid cards really help

MiG

my problem was mostly that the drives I used were multi TB sized, at which point any RAID configuration will have unfavourable rebuilding times

started out with 500GB ones on the Areca, right now there's 12 8TB ones in ZFS

Burgi

@Hennes my last 2 AMD cards have died due to poor engineering. i've gone nvidia this time and its holding up way better and way fewer crazy driver issues

Hennes

12:59

My AMD 5870 lived a logn times. No issues
then a NV 960. same
then a NVC 1080. Also no problems
And soon a 5950 from AMD

No issues with either, bar the nvdia driver updates

Can download new stuff and install. But to update I and I am asked to register

MiG

mkay? o_O

Hennes

So one end up with full driver deinstall, reboot, install latest

MiG

howtogeek.com/681225/…

I guess that'll still involve the reboot

yeah: "You’re now responsible for updating your own NVIDIA drivers. They won’t automatically check for updates or download and install new versions of your GPU drivers for you. That feature requires the NVIDIA GeForce Experience software."

Hennes

Ah, studio driver is normal driver. That is new for me

MiG

nothing stopping you from using a disposable mail address and a fake name (and moustache) though

Hennes

13:03

according yto my desktop I am using the lastest drivers.
Which were released 2-3 years ago

Somehow I have some doubs, though that is an older gtx 1080

forest

20:30

@bwDraco I think so, although I also like floating window managers (dwm has a floating mode).

Although I've also used cwm, which is like dwm but without any tiling support. And there are some more feature-complete tiling window managers like i3, whereas dwm is really minimalist.

XKCD

21:11

We carefully sampled the general population and found that most people are familiar with acquiescence bias.

Michael

23:10

Hello search bar

I have been assimilated

Transcript for