Created attachment 848660 [details]
dmesg tail; journal tail; Xorg.0.log; drm.debug=0x06 log_buf_len=1M

Original Summary:
[i815] kernel 5.11: Xorg fails to run: open /dev/dri/card0: No such file or
directory; (EE) GARTInit: Unable to open /dev/agpgart (No such file or
directory)

Xorg is running on TW20210420 on this ancient i815 Dell using xf86-video-intel
DDX and kernel 5.10, but fails as indicated in summary with 5.11.15.

https://www.linuxquestions.org/questions/linux-hardware-18/intel-corporation-82815-chipset-graphics-controller-driver-4175671372/#post6101199
has a short record of TW Xorg on this same PC's IGP working 13 months ago.

# inxi -CGSxxy
System:
  Host: gx150 Kernel: 5.10.16-1-default i686 bits: 32 compiler: gcc v: 10.2.1
  Desktop: KDE 3 wm: kwin dm: N/A Distro: openSUSE Tumbleweed 20210420
CPU:
  Info: Single Core model: Intel Pentium III bits: 32 type: MCP
  arch: P6 III Tualitin rev: 1 cache: L1: 32 KiB L2: 256 KiB
  flags: pae sse bogomips: 2259
  Speed: 1130 MHz min/max: N/A Core speed (MHz): 1: 1130Graphics:
  Device-1: Intel 82815 Graphics vendor: Dell driver: N/A bus-ID: 00:02.0
  chip-ID: 8086:1132
  Display: x11 server: X.Org 1.20.10 driver: loaded: intel
  unloaded: fbdev,modesetting,vesa resolution: 1680x1050~60Hz s-dpi: 90
  OpenGL: renderer: llvmpipe (LLVM 11.0.1 128 bits) v: 4.5 Mesa 21.0.2
  compat-v: 3.1 direct render: Yes

# zypper se -si intel
...
i  | intel-vaapi-driver    | package | 2.4.1-2.4                      | i586  
| OSS
i+ | kernel-firmware-intel | package | 20210315-1.1                   | noarch
| OSS
i  | libdrm_intel1         | package | 2.4.105-1.1                    | i586  
| OSS
i+ | xf86-video-intel      | package | 2.99.917+git8674.25c9a2fcc-5.7 | i586  
| OSS

# rpm -qa | grep nel-def
kernel-default-5.4.14-2.1.i586 OK
kernel-default-5.5.13-1.1.i586 OK
kernel-default-5.7.11-1.1.i586 OK
kernel-default-5.8.15-1.2.i586 OK
kernel-default-5.9.14-1.2.i586 OK
kernel-default-5.10.16-1.3.i586 OK
kernel-default-5.11.2-1.2.i586 FAIL
kernel-default-5.11.15-1.2.i586 FAIL