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Re: no graphics with Lenovo Thinkcentre M700




On 3/5/25 00:12, Felix Miata wrote:
I have a slightly newer PC and see nothing obviously evident in your data to
explain the problem. That said, I don't remember why I have i915.enable_guc=2
included on my kernel cmdline. It may be that you need it too. Also, you do have
kernel-firmware-free installed, correct?

For some reason I'm not finding any kernel-firmware-free. I see I have firmware-linux-free...?

apt show kernel-firmware-free
N: Unable to locate package kernel-firmware-free
N: Unable to locate package kernel-firmware-free
E: No packages found


sudo apt update
  --snip--
All packages are up to date.


(no errors or warnings reported)


sudo apt install kernel-firmware-free
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package kernel-firmware-free



cat /etc/apt/sources.list
#deb cdrom:[Debian GNU/Linux 12.9.0 _Bookworm_ - Official amd64 NETINST with firmware 20250111-10:54]/ bookworm contrib main non-free-firmware

deb http://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware deb-src http://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware

deb http://security.debian.org/debian-security bookworm-security main non-free-firmware deb-src http://security.debian.org/debian-security bookworm-security main non-free-firmware

# bookworm-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
deb http://deb.debian.org/debian/ bookworm-updates main non-free-firmware
deb-src http://deb.debian.org/debian/ bookworm-updates main non-free-firmware



apt show firmware-linux-free

Package: firmware-linux-free
Version: 20200122-1
Priority: optional
Section: kernel
Source: firmware-free
Maintainer: Debian Kernel Team <debian-kernel@lists.debian.org>
Installed-Size: 87.0 kB
Suggests: initramfs-tools
Homepage: http://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git
Tag: role::app-data
Download-Size: 24.2 kB
APT-Manual-Installed: no
 --snip--
I can't recall ever trying a DP-to-VGA
cable or converter, and avoid VGA connections unless there is no other option. I'm
not sure I even own one. I suppose you could be getting a feedback failure from
your EDID using it to cause this trouble. I've had good luck with DP-to-HDMI
converters when necessary. Flatscreen displays are usually happier to be connected
digitally. VGA is analog.
I agree about VGA. I think I should quit wasting time on this until I get more DP-HDMI cords, I seem to be completely out of stock on those.

# inxi -GSaz --vs --za --hostname
inxi 3.3.37-00 (2025-01-06)
System:
   Host: ab250 Kernel: 6.1.0-31-amd64 arch: x86_64 bits: 64 compiler: gcc
     v: 12.2.0 clocksource: tsc avail: hpet,acpi_pm
     parameters: BOOT_IMAGE=/vmlinuz root=LABEL=<filter> noresume
     ipv6.disable=1 net.ifnames=0 consoleblank=0 i915.enable_guc=2
   Desktop: TDE (Trinity) v: R14.1.3 tk: Qt v: 3.5.0 wm: Twin v: 3.0
     with: kicker vt: 7 dm: 1: TDM 2: XDM Distro: Debian GNU/Linux 12 (bookworm)
Graphics:
   Device-1: Intel HD Graphics 630 vendor: ASUSTeK driver: i915 v: kernel
     arch: Gen-9.5 process: Intel 14nm built: 2016-20 ports:
     active: DP-1,HDMI-A-2,HDMI-A-3 empty: DP-2,HDMI-A-1 bus-ID: 00:02.0
     chip-ID: 8086:5912 class-ID: 0300
   Display: x11 server: X.Org v: 1.21.1.7 compositor: Twin v: 3.0 driver: X:
     loaded: modesetting unloaded: fbdev,vesa dri: iris gpu: i915 display-ID: :0
     screens: 1

I see my 'Display:' value is missing 'x11':

Display: server: X.org v: 1.21.1.7 driver: X: loaded: modesetting unloaded: fbdev,vesa

    dri: iris gpu: i915 tty: 158x35

I included i915.enable_guc=2 in kernel commandline, and didn't notice a difference:

inxi -GSaz System: Kernel: 6.1.0-31-amd64 arch: x86_64 bits: 64 compiler: gcc v: 12.2.0 parameters: BOOT_IMAGE=/boot/vmlinuz-6.1.0-31-amd64 root=UUID=20550085-c29f-4537-b70e-086e5ab86f7f ro quiet i915.enable_guc=2 Console: pty pts/0 DM: LightDM v: 1.26.0 Distro: Debian GNU/Linux 12 (bookworm) Graphics: Device-1: Intel HD Graphics 530 vendor: Lenovo driver: i915 v: kernel arch: Gen-9 process: Intel 14n built: 2015-16 ports: active: DP-2 empty: DP-1, DP-3, HDMI-A-1, HDMI-A-2, HDMI-A-3 bus-ID: 00:02.0 chip-ID: 8086:1912 class-ID: 0300 Display: server: X.org v: 1.21.1.7 driver: X: loaded: modesetting unloaded: fbdev,vesa dri: iris gpu: i915 tty: 158x36 Monitor-1: DP-2 model: Sceptre J20 built: 2021 res: 1600x900 dpi: 92 gamma: 1.2 size: 435x237mm (17.13x9.33") diag: 496mm (19.5") ratio: 16:9 modes: max: 1600x900 min: 720x400 API: OpenGL Message: GL data unavailable in console. Try -G --display

--
Thank You!

Titus Newswanger
Curtiss WI


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