In my own case as I set auto login on the issue was at first start while E17 was auto configuring itself, I was able to listen Elive's intro song but screen was black, as I didn't know anything in Exx DE if I switched into another session with Ctrl+Alt+Fx I wasn't able to look for which file I should investigate, so the simplest way was to install again (several times until I understood where the issue was) as previous step to big hammer. Fortunately after some attempts big hammer wasn't needed 
Here you have from 3.7.7-32 where I have not this issue and normally OpenGL is running.
System:
Host: Elive-HP-3-7-4-32 Kernel: 4.19.0-5-686 i686 bits: 32 compiler: gcc
v: 8.3.0 Desktop: N/A Distro: Elive testing 3.7.7 (alpha)
base: Debian buster/sid
Machine:
Type: Laptop System: Hewlett-Packard product: HP Mini 210-4000
v: 0797200000204600000300100 serial:
Mobo: Hewlett-Packard model: 338D v: 37.19 serial:
UEFI [Legacy]: Hewlett-Packard v: F.08 date: 02/21/2013
Battery:
ID-1: BAT0 charge: 30.1 Wh condition: 30.4/30.4 Wh (100%)
model: Hewlett-Packard Primary status: Charging
CPU:
Topology: Dual Core model: Intel Atom N2600 bits: 32 type: MT MCP
arch: Saltwell rev: 1 L2 cache: 512 KiB
flags: nx pae sse sse2 sse3 ssse3 bogomips: 12800
Speed: 1564 MHz min/max: 600/1600 MHz Core speeds (MHz): 1: 1454 2: 1532
3: 1443 4: 1530
Graphics:
Device-1: Intel Atom Processor D2xxx/N2xxx Integrated Graphics
vendor: Hewlett-Packard driver: gma500 v: N/A bus ID: 00:02.0
Display: x11 server: X.Org 1.20.4 driver: modesetting unloaded: fbdev,vesa
resolution: 1024x600~60Hz
OpenGL: renderer: llvmpipe (LLVM 7.0 128 bits) v: 3.3 Mesa 18.3.6
direct render: Yes
Audio:
Device-1: Intel NM10/ICH7 Family High Definition Audio
vendor: Hewlett-Packard driver: snd_hda_intel v: kernel bus ID: 00:1b.0
Sound Server: ALSA v: k4.19.0-5-686
Network:
Device-1: Realtek RTL810xE PCI Express Fast Ethernet
vendor: Hewlett-Packard driver: r8169 v: kernel port: 3000 bus ID: 01:00.0
IF: eno1 state: down mac:
Device-2: Qualcomm Atheros AR9485 Wireless Network Adapter
vendor: Hewlett-Packard driver: ath9k v: kernel port: 3000 bus ID: 02:00.0
IF: wlo1 state: up mac:
Device-3: Qualcomm Atheros type: USB driver: btusb bus ID: 4-2:18
Drives:
Local Storage: total: 298.09 GiB used: 176.88 GiB (59.3%)
ID-1: /dev/sda vendor: Western Digital model: WD3200BPVT-60JJ5T0
size: 298.09 GiB
Partition:
ID-1: / size: 29.40 GiB used: 8.26 GiB (28.1%) fs: ext4 dev: /dev/sda6
ID-2: swap-1 size: 5.00 GiB used: 393.5 MiB (7.7%) fs: swap dev: /dev/sda2
Sensors:
Missing: Required tool sensors not installed. Check --recommends
Repos:
No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/aaa-elive.list
1: deb http://repo.buster.elive.elivecd.org/ buster main elive efl games ports fixes drivers multimedia non-free
Active apt repos in: /etc/apt/sources.list.d/debian.list
1: deb Index of /debian buster main contrib non-free
2: deb Index of /debian buster-backports main contrib non-free
No active apt repos in: /etc/apt/sources.list.d/ggg-marillat.list
Info:
Processes: 177 Uptime: 6h 24m Memory: 991.4 MiB used: 571.8 MiB (57.7%)
Init: systemd runlevel: 5 Compilers: gcc: 8.3.0 Shell: zsh v: 5.7.1
inxi: 3.0.32
Tomorrow I'll start my 3.0.6 partition in the same machine and copy you the result in 3.0 releases where I must disable OpenGL in E17 to avoid this issue to see if there are some differences
