Dear Thomas,
I have to correct myself.
Am 16.12.22 um 14:16 schrieb Paul Menzel:
Am 16.12.22 um 13:27 schrieb Thomas Zimmermann:
Am 15.12.22 um 17:39 schrieb Paul Menzel:
[…]
Between Linux 5.10.103 and 5.10.110/5.15.77, matrixfb fails to load.
Off-topic, but related. matroxfb is obsolete and there's a maintained
DRM replacement (mgag200) for this hardware.
I also remembered something like this in the back of my head. Though I
thought about using simpledrm (`DRM_SIMPLEDRM`), we do not build though.
Is there anything missing from mgag200 that prevents you from switching?
No, it looks like the matroxfb modules take precedence over the mgag200
module:
$ grep -e FB_MATROX -e MGAG /boot/config-5.15.77.mx64.440
CONFIG_DRM_MGAG200=m
CONFIG_FB_MATROX=m
CONFIG_FB_MATROX_MILLENIUM=y
CONFIG_FB_MATROX_MYSTIQUE=y
CONFIG_FB_MATROX_G=y
CONFIG_FB_MATROX_I2C=m
# CONFIG_FB_MATROX_MAVEN is not set
$ lsmod | grep matrox
matroxfb_base 28672 0
matroxfb_g450 16384 1 matroxfb_base
matroxfb_Ti3026 16384 1 matroxfb_base
matroxfb_accel 16384 1 matroxfb_base
matroxfb_DAC1064 20480 1 matroxfb_base
g450_pll 16384 2 matroxfb_g450,matroxfb_DAC1064
matroxfb_misc 20480 5 g450_pll,matroxfb_Ti3026,matroxfb_base,matroxfb_g450,matroxfb_DAC1064
The search string was incorrect. The module mgag200, is loaded:
$ lsmod | grep mgag200
mgag200 36864 0
drm_kms_helper 241664 3 mgag200
drm 524288 3 drm_kms_helper,mgag200
i2c_algo_bit 16384 1 mgag200
and it is used according to `lspci`:
$ lspci -nn -k -s 09:03.
09:03.0 VGA compatible controller [0300]: Matrox Electronics
Systems Ltd. MGA G200eW WPCM450 [102b:0532] (rev 0a)
DeviceName: Embedded Video
Subsystem: Dell MGA G200eW WPCM450 [1028:02d3]
Kernel driver in use: mgag200
Kernel modules: matroxfb_base, mgag200
So, it was only a cosmetic issue.
Kind regards,
Paul
